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AMY IS FURIOUS WHEN SHE LEARNS SHELDON HAS SHARED INTIMATE DETAILS OF THEIR RELATIONSHIP WITH PEOPLE AT THE UNIVERSITY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JUNE 8
“The Allowance Evaporation”– Sheldon and Amy have their first fight since moving in together, and Koothrappali is shocked at the realities of financial independence when he stops receiving support from his father, on a rebroadcast of THE BIG BANG THEORY, Thursday, June 8 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 2/16/17.)
RECURRING CAST: Brian George (Dr. Koothrappali)
Brian Posehn (Bert)
STORY BY: Eric Kaplan, Maria Ferrari, Jeremy Howe
TELEPLAY BY: Steve Molaro, Steve Holland, Jim Reynolds
DIRECTED BY: Mark Cendrowski

SHELDON GETS HELP READING PEOPLE’S FEELINGS WHEN HE BETA-TESTS AN EMOTION-DETECTING MACHINE, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, MAY 25
“The Emotion Detection Automation”– Sheldon beta-tests an MIT invention after hearing it can help him read people’s emotions. Also, Leonard can’t hide his feelings when Penny announces her brother is coming to town, and Raj invites his ex-girlfriends over to give him dating advice, on a rebroadcast of THE BIG BANG THEORY, Thursday, May 25 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Laura Spencer, Katie Micucci, Alessandra Torresani and Katie Leclerc return as Raj’s ex-girlfriends. (Originally broadcast 2/2/17.) Promo 
RECURRING CAST: Laura Spencer (Emily Sweeney)
Kate Micucci (Lucy)
Alessandra Torresani (Claire)
Katie Leclerc (Emily)
STORY BY: Chuck Lorre, Steven Molaro, Eric Kaplan
TELEPLAY BY: Steve Holland, Jim Reynolds, Saladin K. Patterson
DIRECTED BY: Mark Cendrowski

“The Romance Recalibration”– When Penny feels that Leonard is taking her for granted, she decides to go on a spa weekend with Amy. Also, Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby’s room, on a rebroadcast of THE BIG BANG THEORY, Thursday, May 18 (8:00-8:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 1/19/17.) Promo
STORY BY: Chuck Lorre, Dave Goetsch, Anthony Del Broccolo
TELEPLAY BY: Steven Molaro, Steve Holland, Saladin K. Patterson
DIRECTED BY: Mark Cendrowski

PENNY IS INVITED TO APPEAR AT A LOCAL COMIC CON FOR HER ROLE IN “SERIAL APE-IST,” AND LEONARD CONVINCES HER TO ATTEND, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MAY 15 Preview
“The Fetal Kick Catalyst” – Penny is surprised to learn she has fans of her performance in “Serial Ape-ist” when she attends Van Nuys Comic Con with Leonard. Also, Amy hosts a Sheldon-style brunch at Penny’s apartment, and Wolowitz makes an impulsive purchase when he starts stressing out about the baby on the way, on a rebroadcast of THE BIG BANG THEORY, Monday, May 15 (9:00-9:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 10/27/16.)
GUEST CAST: Michelle Arthur (Mrs. Petrescu)
Joshua Banday (Nolan)
Bryan Safi (Daniel)
Tucker Albrizzi (Christopher)
Jareb Dauplaise (Jeff)
STORY BY: Steve Holland, Tara Hernandez, Jeremy Howe
TELEPLAY BY: Steve Molaro, Saladin K. Patterson, Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski

SHELDON THREATENS TO BREAK OFF THEIR RELATIONSHIP WHEN AMY REFUSES TO ADHERE TO THE BATHROOM SCHEDULE, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MAY 15
“The Hot Tub Contamination” – Leonard and Penny must separate a quarreling Sheldon and Amy when their cohabitation does not go as planned, and Sheldon threatens to break off their relationship when Amy refuses to adhere to the bathroom schedule. Also, Howard and Bernadette find unexpected guests at their house when they decide to stay home from a planned vacation, on a rebroadcast of THE BIG BANG THEORY, Monday, May 15 (8:00-8:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 10/17/16.) Promo
STORY BY: Chuck Lorre, Maria Ferrari, Tara Hernandez
TELEPLAY BY: Steve Holland, Eric Kaplan, Jim Reynolds
DIRECTED BY: Mark Cendrowski

SHELDON AND AMY VISIT LEONARD AND PENNY FOR THE FIRST TIME SINCE THE HOLIDAYS AND SHARE DETAILS ABOUT THEIR TERRIBLE TRIP TO TEXAS, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, MAY 11
Laurie Metcalf Returns as Sheldon’s Mother, Mary
“The Holiday Summation” – Sheldon and Amy visit Leonard and Penny for the first time since the holidays and share details about their terrible trip to Texas, on a rebroadcast of THE BIG BANG THEORY, Thursday, May 11 (8:31-9:01 PM, ET/PT) on the CBS Television Network. Laurie Metcalf returns as Sheldon’s mother, Mary. (Originally broadcast 1/5/17.)
GUEST CAST: Pamela Adlon (Halley, O.S)
STORY BY: Steve Molaro, Eric Kaplan, Tara Hernandez
TELEPLAY BY: Steve Holland, Maria Ferrari, Jeremy Howe
DIRECTED BY: Mark Cendrowski

THE GANG IS CONCERNED WHEN SHELDON’S FORMER ADMIRER, DR. RAMONA NOWITZKI, RESURFACES WHILE AMY IS AWAY AT PRINCETON, ON THE 10th SEASON FINALE OF “THE BIG BANG THEORY,” THURSDAY, MAY 11
Riki Lindhome Returns as Dr. Ramona Nowitzki
“The Long Distance Dissonance”– The gang is concerned when Sheldon’s former admirer, Dr. Ramona Nowitzki (Riki Lindhome), resurfaces while Amy is away at Princeton, on the 10th season finale of THE BIG BANG THEORY, Thursday, May 11 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
GUEST CAST: Riki Lindhome (Dr. Ramona Nowitzki)
STORY BY: Steven Molaro, Eric Kaplan, Jim Reynolds
TELEPLAY BY: Chuck Lorre, Steve Holland, Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview  Sneak Peek #1  Sneak Peek #2  Sneak Peek #3 

HOWARD AND BERNADETTE WELCOME THEIR NEW BABY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, MAY 4
“The Birthday Synchronicity”– Howard and Bernadette welcome their new baby and Sheldon and Amy celebrate Amy’s birthday, on a rebroadcast of THE BIG BANG THEORY, Thursday, May 4 (8:31-9:01 PM, ET/PT) on the CBS Television Network. (Originally broadcast 12/15/16.)
GUEST CAST: Vernee Watson (Althea)
Pamela Adlon (Halley)
STORY BY: Chuck Lorre, Steve Holland, Maria Ferrari
TELEPLAY BY: Steve Molaro, Eric Kaplan, Tara Hernandez
DIRECTED BY: Nikki Lorre

AFTER LEONARD, SHELDON AND WOLOWITZ CELEBRATE THE COMPLETION OF THE TOP SECRET AIR FORCE PROJECT, THEY ARE MET WITH AN UNPLEASANT SURPRISE, ON “THE BIG BANG THEORY,” THURSDAY, MAY 4
Dean Norris Returns as Colonel Williams
“The Gyroscopic Collapse” – After Leonard, Sheldon and Wolowitz celebrate the completion of the top secret air force project, they are met with an unpleasant surprise. Also, Amy is offered a summer position as a visiting researcher, on THE BIG BANG THEORY, Thursday, May 4 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
GUEST CAST: Kimberly D. Brooks (Computer Voice, V.O)
STORY BY: Chuck Lorre, Steve Holland, Alex Ayers
TELEPLAY BY: Steven Molaro, Jim Reynolds, Saladin K. Patterson
DIRECTED BY: Anthony Rich

LEONARD ISN’T THRILLED WHEN PENNY CONSIDERS TAKING A NEW JOB OFFERED BY HER EX-BOYFRIEND, ON “THE BIG BANG THEORY,” THURSDAY, APRIL 27
Brian Thomas Smith Returns as Zack
“The Cognition Regeneration” – Leonard isn’t thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack (Brian Thomas Smith), on THE BIG BANG THEORY, Thursday, April 27 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
GUEST CAST: Brian Thomas Smith (Zack)
STORY BY: Steve Holland, Tara Hernandez, Jeremy Howe
TELEPLAY BY: Dave Goetsch, Eric Kaplan, Jim Reynolds
DIRECTED BY: Mark Cendrowski

SHELDON STRUGGLES TO CONTAIN HIS JEALOUSY WHEN A CO-WORKER WINS AN AWARD, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, APRIL 20
Stephen Hawking Returns to Guest Star as Himself
“The Geology Elevation” – When Bert (Brian Posehn), a Caltech geologist, wins the MacArthur Genius fellowship, Sheldon is overcome with jealousy. Also, Wolowitz finds an old remote controlled Stephen Hawking action figure he invented, on a rebroadcast of THE BIG BANG THEORY, Thursday, April 20 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Stephen Hawking returns to guest star as himself. (Originally broadcast 11/17/16.)
RECURRING CAST: John Ross Bowie (Kripke)
Brian Posehn (Bert)
Stephen Hawking (Himself)
GUEST CAST: Kunal Dudheker (Tour Guide)
STORY BY: Chuck Lorre, Erik Kaplan, Maria Ferrari
TELEPLAY BY: Steve Holland, Jim Reynolds, Jeremy Howe
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek 

HOWARD AND BERNADETTE HAVE A HARD TIME LEAVING HALLEY IN DAYCARE WHEN BERNADETTE RETURNS TO WORK, ON “THE BIG BANG THEORY,” THURSDAY, APRIL 13
Brian Posehn Returns as Bert
“The Separation Agitation” – Howard and Bernadette have a hard time leaving Halley in day care when Bernadette returns to work. Also, Bert (Brian Posehn) introduces the gang to his new girlfriend, Rebecca (April Bowlby), on THE BIG BANG THEORY, Thursday, April 13 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
GUEST CAST: Brian Posehn (Bert)
April Bowlby (Rebecca)
STORY BY: Steven Molaro, Jim Reynolds, Maria Ferrari
TELEPLAY BY: Steve Holland, Tara Hernandez, Jeremy Howe
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1  Sneak Peek #2 

CBS SHELDON AND AMY MOVE IN TOGETHER, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, APRIL 3
"The Cohabitation Experimentation" - When Amy's apartment floods, she proposes a "cohabitation experiment" with Sheldon. Also, Howard and Bernadette are upset when Koothrappali learns the gender of the baby before they do, on a rebroadcast of THE BIG BANG THEORY, Monday, April 3 (8:00-8:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 10/10/16.) Promo
STORY BY: Chuck Lorre, Dave Goetsch, Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland, Tara Hernandez
DIRECTED BY: Mark Cendrowski

LEONARD, PENNY AND RAJ ADJUST TO THEIR NEW LIVING ARRANGEMENT, ON “THE BIG BANG THEORY,” THURSDAY, MARCH 30
“The Collaboration Fluctuation” – Leonard, Penny and Raj adjust to their new living arrangement, and Sheldon takes an interest in Amy’s work, on THE BIG BANG THEORY, Thursday, March 30 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Pamela Adlon (Halley, O.C)
STORY BY: Chuck Lorre, Tara Hernandez, Giuseppe Graziano
TELEPLAY BY: Steven Molaro, Steve Holland, Dave Goetsch
DIRECTED BY: Mark Cendrowski

SHELDON TELLS AMY HE WANTS TO MAKE A BABY WITH HER, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MARCH 27
“The Brain Bowl Incubation” – After a successful experiment combining their genes, Sheldon will stop at nothing to convince Amy they should procreate. Also, Koothrappali is embarrassed to tell the gang what the new woman he’s dating does for a living, on a rebroadcast of THE BIG BANG THEORY, Monday, March 27 (8:00-8:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 11/10/16.)
GUEST CAST: Maria Canals-Barrera (Issabella)
STORY BY: Chuck Lorre, Steve Holland, Saladin K. Patterson
TELEPLAY BY: Steve Molaro, Maria Ferrari, Tara Hernandez
DIRECTED BY: Mark Cendrowski

WHEN RAJ MOVES OUT OF HIS APARTMENT, LEONARD AND PENNY OFFER HIM SHELDON’S OLD ROOM, ON “THE BIG BANG THEORY,” THURSDAY, MARCH 9
Christine Baranski Returns as Sheldon’s Mother, Beverly
“The Escape Hatch Identification” – When Raj moves out of his apartment, Leonard and Penny offer him Sheldon’s old room, on THE BIG BANG THEORY, Thursday, March 9 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Christine Baranski returns as Sheldon’s mother, Beverly.
STORY BY: Steven Molaro, Eric Kaplan,Anthony Del Broccolo
TELEPLAY BY: Steve Holland, Jim Reynolds, Tara Hernandez
DIRECTED BY: Mark Cendrowski

IN ORDER TO CONTINUE LIVING WITH SHELDON, AMY LIES TO HIM ABOUT REPAIRS BEING MADE TO HER APARTMENT, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MARCH 6
Editor’s note: This episode replaces a previously scheduled episode.
“The Veracity Elasticity” – In order to continue living with Sheldon, Amy lies to him about repairs being made to her apartment, and they host an “on location” episode of “Fun With Flags” in Penny’s apartment. Also, Leonard lets Penny decorate Sheldon’s old room after he learns that she has been secretly moving Leonard’s collectibles into storage, on THE BIG BANG THEORY, Monday, March 6 (8:00-8:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 11/3/16.)
STORY BY: Steve Molaro, Eric Kaplan, Maria Ferrari
TELEPLAY BY: Steve Holland, Jim Reynolds, Adam Faberman
DIRECTED BY: Mark Cendrowski
Video Clips: Promo Preview Sneak Peek #1 Sneak Peek #2 

SHELDON THREATENS TO BREAK OFF THEIR RELATIONSHIP WHEN AMY REFUSES TO ADHERE TO THE BATHROOM SCHEDULE, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, MARCH 2
“The Hot Tub Contamination” – Leonard and Penny must separate a quarreling Sheldon and Amy when their cohabitation does not go as planned, and Sheldon threatens to break off their relationship when Amy refuses to adhere to the bathroom schedule. Also, Howard and Bernadette find unexpected guests at their house when they decide to stay home from a planned vacation, on a rebroadcast of THE BIG BANG THEORY, Thursday, March 2 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 10/17/16.)
STORY BY: Chuck Lorre, Maria Ferrari, Tara Hernandez
TELEPLAY BY: Steve Holland, Eric Kaplan, Jim Reynolds
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek

TENSIONS RISE WHEN THE BOYS STRUGGLE TO COMPLETE THEIR GOVERNMENT PROJECT ON TIME, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, FEB. 27
Editor’s note: This episode replaces what was previously scheduled.
Dean Norris Returns as Air Force Representative Colonel Williams
“The Dependence Transcendence” – Tensions rise when the boys struggle to complete their government project on time and Sheldon tries an energy drink to stay awake. Also, Penny and Amy go to a “party” at Bert (Brian Posehn) the geologist’s house, and Kooothrappali learns Bernadette’s true feelings about her pregnancy when they clean out the future baby room, on a rebroadcast of THE BIG BANG THEORY, Monday, Feb. 27 (8:00-8:30 PM, ET/PT) on the CBS Television Network. Dean Norris returns as Air Force Representative Colonel Williams. (Originally broadcast 10/3/16.)
RECURRING CAST: Brian George (Dr. Koothrappali)
Dean Norris (Colonel Williams)
GUEST CAST: Brian Posehn (Bert)
Brandon Jones (The Flash)
STORY BY: Steven Molaro, Saladin K. Patterson, Tara Hernandez
TELEPLAY BY: Steve Holland, Maria Ferrari, Jeremy Howe
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 

CBS THE BIG BANG THEORY: KOOTHRAPPALI PUTS SHELDON IN CHARGE OF HIS FINANCES, ON “THE BIG BANG THEORY,” THURSDAY, FEB. 23
“The Comic-Con Conundrum” – With Koothrappali cut off from his father’s fortune, he appoints Sheldon to help him get out of debt. Also, Penny considers joining Leonard at Comic-Con, on THE BIG BANG THEORY, Thursday, Feb. 23 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
STORY BY: Eric Kaplan, Saladin K. Patterson, Tara Hernandez
TELEPLAY BY: Steve Molaro, Steve Holland, Maria Ferrari
DIRECTED BY: Mark Cendrowski
Video Clips: Preview  Sneak Peek #1  Sneak Peek #2 

CBS AMY IS FURIOUS WHEN SHE LEARNS SHELDON HAS SHARED INTIMATE DETAILS OF THEIR RELATIONSHIP WITH PEOPLE AT THE UNIVERSITY, ON “THE BIG BANG THEORY,” THURSDAY, FEB. 16
“The Allowance Evaporation”– Sheldon and Amy have their first fight since moving in together, and Koothrappali is shocked at the realities of financial independence when he stops receiving support from his father, on THE BIG BANG THEORY, Thursday, Feb. 16 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Brian George (Dr. Koothrappali)
Brian Posehn (Bert)
STORY BY: Eric Kaplan, Maria Ferrari, Jeremy Howe
TELEPLAY BY: Steve Molaro, Steve Holland, Jim Reynolds
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 

CBS LEONARD AND WOLOWITZ TRY TO GET SHELDON OUT OF THEIR HAIR BY GIVING HIM TICKETS TO A HISTORIC RAILWAY, ON “THE BIG BANG THEORY,” THURSDAY, FEB. 9
Dean Norris Returns as Colonel Williams
“The Locomotion Reverberation”– Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system. Also, Penny and Amy take Bernadette out for the night, leaving Raj and Stuart to care for baby Halley, on THE BIG BANG THEORY, Thursday, Feb. 9 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Dean Norris returns as Colonel Williams.
STORY BY: Chuck Lorre, Steven Holland, Jim Reynolds
TELEPLAY BY: Steve Molaro, Maria Ferrari, Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek  Sheldon Goes Off the Rails 

CBS AIR FORCE REPRESENTATIVE COLONEL WILLIAMS SITS DOWN TO TALK WITH WOLOWITZ, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, JAN. 30
Editor’s note: This episode replaces previously scheduled programming.
Dean Norris Returns as Colonel Williams
“The Military Miniaturization” – Colonel Williams (Dean Norris), an Air Force representative from the Department of Material Command sits down to talk with Wolowitz, on a rebroadcast of THE BIG BANG THEORY, Monday, Jan. 30 (8:00-8:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 9/26/16.)
RECURRING CAST: Dean Norris (Colonel Williams)
GUEST CAST: Josh Zuckerman (Marty)
STORY BY: Chuck Lorre, Eric Kaplan, Jim Reynolds
TELEPLAY BY: Steve Molaro, Steve Holland, Maria Ferrari
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2

CBS SHELDON GETS HELP READING PEOPLE’S FEELINGS WHEN HE BETA-TESTS AN EMOTION-DETECTING MACHINE, ON “THE BIG BANG THEORY,” THURSDAY, FEB. 2
“The Emotion Detection Automation”– Sheldon beta-tests an MIT invention after hearing it can help him read people’s emotions. Also, Leonard can’t hide his feelings when Penny announces her brother is coming to town, and Raj invites his ex-girlfriends over to give him dating advice, on THE BIG BANG THEORY, Thursday, Feb. 2 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Laura Spencer, Katie Micucci, Alessandra Torresani and Katie Leclerc return as Raj’s ex-girlfriends.
STORY BY: Chuck Lorre, Steven Molaro, Eric Kaplan
TELEPLAY BY: Steve Holland, Jim Reynolds, Saladin K. Patterson
DIRECTED BY: Mark Cendrowski

CBS SHELDON AND AMY MOVE IN TOGETHER, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JAN. 26
“The Cohabitation Experimentation” – When Amy’s apartment floods, she proposes a “cohabitation experiment” with Sheldon. Also, Howard and Bernadette are upset when Koothrappali learns the gender of the baby before they do, on a rebroadcast of THE BIG BANG THEORY, Thursday, Jan. 26 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 10/10/16.)
STORY BY: Chuck Lorre, Dave Goetsch, Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland, Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 

CBS AFTER SHELDON’S MOTHER AND LEONARD’S FATHER SHARE AN EVENING TOGETHER, EVERYONE DEALS WITH AN AWKWARD MORNING THE NEXT DAY, ON A REBROADCAST OF THE 10th SEASON PREMIERE OF “THE BIG BANG THEORY,” MONDAY, JAN. 23
Editor’s note: This episode replaces previously scheduled programing.
Guest Stars Include Katey Sagal as Penny’s Mother, Jack McBrayer as Penny’s Brother and Dean Norris as Air Force Representative Colonel Williams
Christine Baranski, Laurie Metcalf, Judd Hirsch and Keith Carradine Return
“The Conjugal Conjecture” – After Sheldon’s mother and Leonard's father share an evening together, everyone deals with an awkward morning the next day. Also, Penny’s family arrives for the wedding ceremony, including her anxiety-ridden mother, Susan (Katey Sagal), and her drug dealing brother, Randall (Jack McBrayer), on a rebroadcast of the 10th season premiere of THE BIG BANG THEORY, Monday, Jan. 23 (9:30-10:00 PM, ET/PT), on the CBS Television Network. Dean Norris guest stars as Colonel Williams, an Air Force Representative from the Department of Materiel Command. Christine Baranski, Laurie Metcalf, Judd Hirsch and Keith Carradine return. (Originally broadcast 9/19/16.)
RECURRING CAST: Kevin Sussman (Stuart)
Christine Baranski (Beverly)
Laurie Metcalf (Mary)
Judd Hirsch (Alfred)
Keith Carradine (Wyatt)
Katey Sagal (Susan)
Jack McBrayer (Randall)
Dean Norris (Colonel Williams)
STORY BY: Chuck Lorre, Steve Holland, Tara Hernandez
TELEPLAY BY: Steve Molaro, Eric Kaplan, Jim Reynolds
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 

CBS WHEN LEONARD AND PENNY FIGHT, SHELDON PLAYS THE UNLIKELY PEACEMAKER, ON "BIG BANG THEORY," THURSDAY, JAN. 19
"The Romance Recalibration"- When Penny feels that Leonard is taking her for granted, she decides to go on a spa weekend with Amy. Also, Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby's room, on THE BIG BANG THEORY, Thursday, Jan. 19 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
STORY BY: Chuck Lorre, Dave Goetsch, Anthony Del Broccolo
TELEPLAY BY: Steven Molaro, Steve Holland, Saladin K. Patterson
DIRECTED BY: Mark Cendrowski

CBS TENSIONS RISE WHEN THE BOYS STRUGGLE TO COMPLETE THEIR GOVERNMENT PROJECT ON TIME, ON A REBROADCAST OF “BIG BANG THEORY,” THURSDAY, JAN. 12
Dean Norris Returns as Air Force Representative Colonel Williams
“The Dependence Transcendence” – Tensions rise when the boys struggle to complete their government project on time, and Sheldon tries an energy drink to stay awake. Also, Penny and Amy go to a “party” at Bert (Brian Posehn) the geologist’s house, and Kooothrappali learns Bernadette’s true feelings about her pregnancy when they clean out the future baby room, on a rebroadcast of THE BIG BANG THEORY, Thursday, Jan. 12 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Dean Norris returns as Air Force Representative Colonel Williams. (Originally broadcast 10/3/16.)
STORY BY: Steven Molaro, Saladin K. Patterson, Tara Hernandez
TELEPLAY BY: Steve Holland, Maria Ferrari, Jeremy Howe
DIRECTED BY: Mark Cendrowski
Video Clips: Preview  Sneak Peek #1  Sneak Peek #2

CBS CHAOS ENSUES WHEN LEONARD’S RECENTLY DIVORCED PARENTS AND SHELDON’S DEVOUTLY RELIGIOUS MOTHER COMES TO TOWN, ON A REBROADCAST OF THE NINTH SEASON FINALE OF “BIG BANG THEORY,” TUESDAY, JAN. 10
Editor’s note: This episode replaces the previously scheduled episode.
Emmy Award Winner Judd Hirsch Guest Stars as Leonard’s Father, Alfred
Christine Baranksi Returns as Leonard’s Mother, Beverly and Laurie Metcalf Returns as Sheldon’s Mother, Mary
“The Convergence Convergence” - Chaos ensues when Leonard’s recently divorced parents, Alfred (Judd Hirsch) and Beverly (Christine Baranski), and Sheldon’s devoutly religious mother, Mary (Laurie Metcalf), come to town. Also, Wolowitz and Koothrappali think the government is out to get them when they are contacted about their guidance system, on a rebroadcast of the ninth season finale of THE BIG BANG THEORY, Tuesday, Jan. 10 (9:30-10:00 PM, ET/PT) on the CBS Television Network. (Originally broadcast 5/12/16.)
WRITTEN BY: Steven Molaro & Tara Hernandez & Adam Faberman
TELEPLAY BY: Chuck Lorre & Steve Holland & Jeremy Howe
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3 

PENNY STRUGGLES TO BOND WITH LEONARD’S MOTHER WHEN SHE COMES FOR A VISIT, ON A REBROADCAST OF “BIG BANG THEORY,” MONDAY, JAN. 9
Christine Baranksi Returns as Leonard’s Mother, Beverly
“The Line Substitution Solution” – Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly (Christine Baranski), comes to town, and Penny struggles to make a connection with her, on a rebroadcast of THE BIG BANG THEORY, Monday, Jan. 9 (8:00-8:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 5/5/16.)
WRITTEN BY: Steve Holland & Saladin K. Patterson & Tara Hernandez
TELEPLAY BY: Steven Molaro & Eric Kaplan & Maria Ferrari
DIRECTED BY: Anthony Rich
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3 

SHELDON AND AMY VISIT LEONARD AND PENNY FOR THE FIRST TIME SINCE THE HOLIDAYS AND SHARE DETAILS ABOUT THEIR TERRIBLE TRIP TO TEXAS, ON “THE BIG BANG THEORY,” THURSDAY, JAN. 5
Laurie Metcalf Returns as Sheldon’s Mother, Mary
“The Holiday Summation” – Sheldon and Amy visit Leonard and Penny for the first time since the holidays and share details about their terrible trip to Texas, on THE BIG BANG THEORY, Thursday, Jan. 5 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Laurie Metcalf returns as Sheldon’s mother, Mary.
STORY BY: Steve Molaro, Eric Kaplan, Tara Hernandez
TELEPLAY BY: Steve Holland, Maria Ferrari, Jeremy Howe
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek 

THE GANG MUST TAKE SIDES WHEN A FIGHT BETWEEN LEONARD AND SHELDON ESCALATES, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, DEC. 22
“The Viewing Party Combustion” – Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together, on a rebroadcast of THE BIG BANG THEORY, Thursday, Dec. 22 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 4/21/16.)
WRITTEN BY: Eric Kaplan, Maria Ferrari and Jeremy Howe
TELEPLAY BY: Steven Molaro, Steve Holland and Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3 

CBS THE BIG BANG THEORY Airing Thursday, Dec. 15, 2016 (8:00-8:30PM) on the CBS Television Network: THE BIRTHDAY SYNCHRONICITY - Bernadette is taken to the hospital to have her baby. Sheldon and Amy are trying to have Amy's birthday sex.
HOWARD AND BERNADETTE WELCOME THEIR NEW BABY, ON “THE BIG BANG THEORY,” THURSDAY, DEC. 15
“The Birthday Synchronicity”– Howard and Bernadette welcome their new baby and Sheldon and Amy celebrate Amy’s birthday, on THE BIG BANG THEORY, Thursday, Dec. 15 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
GUEST CAST: Vernee Watson (Althea)
Pamela Adlon (Halley)
STORY BY: Chuck Lorre, Steve Holland, Maria Ferrari
TELEPLAY BY: Steve Molaro, Eric Kaplan, Tara Hernandez
DIRECTED BY: Nikki Lorre Read More
Video Clips: Promo Preview  Sneak Peek #1  Sneak Peek #2  Behind the Scenes Clip 

CBS SHELDON AND THE GANG CELEBRATE HIS BIRTHDAY, ON A REBROADCAST OF THE 200TH EPISODE OF "THE BIG BANG THEORY," MONDAY, DEC. 5
Christine Baranski, John Ross Bowie, Sara Gilbert and Wil Wheaton Return, Joined By Special Guest Star Adam West
"The Celebration Experimentation" - After more than nine years together, the gang finally celebrates Sheldon's birthday, surprising him with a special guest, on a rebroadcast of the 200th episode of THE BIG BANG THEORY, Monday, Dec. 5 (9:30-10:00 PM, ET/PT) on the CBS Television Network. Christine Baranski, John Ross Bowie, Sara Gilbert and Wil Wheaton return, joined by special guest star Adam West. (Originally broadcast 2/25/16.)
WRITTEN BY: Chuck Lorre, Eric Kaplan, Jeremy Howe
TELEPLAY BY: Steven Molaro, Steve Holland, Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1  Sneak peek #2 Sneak Peek #3  Sneak Peek #4 Sneak Peek #5 

CBS AIR FORCE REPRESENTATIVE COLONEL WILLIAMS SITS DOWN TO TALK WITH WOLOWITZ, ON A REBROADCAST OF "THE BIG BANG THEORY," THURSDAY, DEC. 8
Dean Norris Returns as Colonel Williams
"The Military Miniaturization" - Colonel Williams (Dean Norris), an Air Force representative from the Department of Material Command, sits down to talk with Wolowitz, on a rebroadcast of THE BIG BANG THEORY, Thursday, Dec. 8 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 9/26/16.)
STORY BY: Chuck Lorre, Eric Kaplan, Jim Reynolds
TELEPLAY BY: Steve Molaro, Steve Holland, Maria Ferrari
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2

CBS BATTLE ENSUES WHEN SHELDON AND LEONARD ARGUE OVER WHO WILL GET CUSTODY OF THEIR SHARED BELONGINGS, ON “THE BIG BANG THEORY,” THURSDAY, DEC. 1
Christopher Lloyd Guest Stars as Theodore
“The Property Division Collision”– Sheldon and Leonard try to divvy up their shared belongings, but can’t agree on anything. Also, Koothrappali and Stuart fight to be the most helpful during Bernadette’s final weeks of pregnancy, on THE BIG BANG THEORY, Thursday, Dec. 1 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
STORY BY: Steve Holland, Bill Prady, Steve Goetsch
TELEPLAY BY: Steve Molaro, Maria Ferrari, Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek 

CBS SHELDON AND AMY SPEND THANKSGIVING AT THE AQUARIUM TOGETHER AS FRIENDS, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, NOV. 24
 Business Magnate and Inventor Elon Musk Guest Stars as Himself
 “The Platonic Permutation” – Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought, on a rebroadcast of THE BIG BANG THEORY, Thursday, Nov. 24 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Business magnate and inventor Elon Musk appears as himself. (Originally broadcast 11/19/15.)
 GUEST CAST: Elon Musk (Himself)
 Wayne Wilderson (Travis)
 WRITTEN BY: Jim Reynolds, Jeremy Howe and Tara Hernandez
 TELEPLAY BY: Steve Holland, Maria Ferrari and Adam Faberman
 DIRECTED BY: Mark Cendrowski

CBS SHELDON TELLS AMY HE WANTS TO MAKE A BABY WITH HER, ON “THE BIG BANG THEORY,” THURSDAY, NOV. 10
 “The Brain Bowl Incubation” – After a successful experiment combining their genes, Sheldon will stop at nothing to convince Amy they should procreate. Also, Koothrappali is embarrassed to tell the gang what the new woman he’s dating does for a living, on THE BIG BANG THEORY, Thursday, Nov. 10 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
 GUEST CAST: Maria Canals-Barrera (Issabella)
 STORY BY: Chuck Lorre, Steve Holland, Saladin K. Patterson
 TELEPLAY BY: Steve Molaro, Maria Ferrari, Tara Hernandez
 DIRECTED BY: Mark Cendrowski

CBS SHELDON STRUGGLES TO CONTAIN HIS JEALOUSY WHEN A CO-WORKER WINS AN AWARD, ON “THE BIG BANG THEORY,” THURSDAY, NOV. 17
Stephen Hawking Returns to Guest Star as Himself Preview
“The Geology Elevation” – When Bert (Brian Posehn), a Caltech geologist, wins the MacArthur Genius fellowship, Sheldon is overcome with jealousy. Also, Wolowitz finds an old remote control Stephen Hawking action figure he invented, on THE BIG BANG THEORY, Thursday, Nov. 17 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Stephen Hawking returns to guest star as himself.
RECURRING CAST: John Ross Bowie (Kripke)
Brian Posehn (Bert)
Stephen Hawking (Himself)
GUEST CAST: Kunal Dudheker (Tour Guide)
STORY BY: Chuck Lorre, Erik Kaplan, Maria Ferrari
TELEPLAY BY: Steve Holland, Jim Reynolds, Jeremy Howe
DIRECTED BY: Mark Cendrowski

CBS IN ORDER TO CONTINUE LIVING WITH SHELDON, AMY LIES TO HIM ABOUT REPAIRS BEING MADE TO HER APARTMENT, ON “THE BIG BANG THEORY,” THURSDAY, NOV. 3 Preview
“The Veracity Elasticity” – In order to continue living with Sheldon, Amy lies to him about repairs being made to her apartment and they host an “on location” episode of “Fun With Flags” in Penny’s apartment. Also, Leonard lets Penny decorate Sheldon’s old room after he learns that she has been secretly moving Leonard’s collectibles into storage, on THE BIG BANG THEORY, Thursday, Nov. 3 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
STORY BY: Steve Molaro, Eric Kaplan, Maria Ferrari
TELEPLAY BY: Steve Holland, Jim Reynolds, Adam Faberman
DIRECTED BY: Mark Cendrowski

CBS PENNY IS INVITED TO APPEAR AT A LOCAL COMIC CON FOR HER ROLE IN “SERIAL APE-IST,” AND LEONARD CONVINCES HER TO ATTEND, WHEN “THE BIG BANG THEORY” MOVES TO ITS REGULAR TIME PERIOD, THURSDAY, OCT. 27, AT 8:00 PM  Preview
“The Fetal Kick Catalyst” – Penny is surprised to learn she has fans of her performance in “Serial Ape-ist” when she attends Van Nuys Comic Con with Leonard. Also, Amy hosts a Sheldon-style brunch at Penny’s apartment, and Wolowitz makes an impulsive purchase when he starts stressing out about the baby on the way, when THE BIG BANG THEORY moves to its regular time period, Thursday, Oct. 27 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
Brian Posehn (Bert)
GUEST CAST: Michelle Arthur (Mrs. Petrescu)
Joshua Banday (Nolan)
Bryan Safi (Daniel)
Tucker Albrizzi (Christopher)
Jareb Dauplaise (Jeff)
STORY BY: Steve Holland, Tara Hernandez, Jeremy Howe
TELEPLAY BY: Steve Molaro, Saladin K. Patterson, Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski

CBS SHELDON THREATENS TO BREAK OFF THEIR RELATIONSHIP WHEN AMY REFUSES TO ADHERE TO THE BATHROOM SCHEDULE, ON “THE BIG BANG THEORY,” MONDAY, OCT. 17
“The Hot Tub Contamination” – Leonard and Penny must separate a quarreling Sheldon and Amy when their cohabitation does not go as planned, and Sheldon threatens to break off their relationship when Amy refuses to adhere to the bathroom schedule. Also, Howard and Bernadette find unexpected guests at their house when they decide to stay home from a planned vacation, on THE BIG BANG THEORY, Monday, Oct. 17 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
STORY BY: Chuck Lorre, Maria Ferrari, Tara Hernandez
TELEPLAY BY: Steve Holland, Eric Kaplan, Jim Reynolds
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek 

CBS SHELDON AND AMY MOVE IN TOGETHER, ON "THE BIG BANG THEORY," MONDAY, OCT. 10
"The Cohabitation Experimentation" - When Amy's apartment floods, she proposes a "cohabitation experiment" with Sheldon. Also, Howard and Bernadette are upset when Koothrappali learns the gender of the baby before they do, on THE BIG BANG THEORY, Monday, Oct. 10 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
STORY BY: Chuck Lorre, Dave Goetsch, Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland, Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2  Sneak Peek #3 

TENSIONS RISE WHEN THE BOYS STRUGGLE TO COMPLETE THEIR GOVERNMENT PROJECT ON TIME, ON “THE BIG BANG THEORY,” MONDAY, OCT. 3
Dean Norris Returns as Air Force Representative Colonel Williams
“The Dependence Transcendence” – Tensions rise when the boys struggle to complete their government project on time and Sheldon tries an energy drink to stay awake. Also, Penny and Amy go to a “party” at Bert (Brian Posehn) the geologist’s house, and Kooothrappali learns Bernadette’s true feelings about her pregnancy when they clean out the future baby room, on THE BIG BANG THEORY, Monday, Oct. 3 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Dean Norris returns as Air Force Representative Colonel Williams.
RECURRING CAST: Brian George (Dr. Koothrappali)
Dean Norris (Colonel Williams)
GUEST CAST: Brian Posehn (Bert)
Brandon Jones (The Flash)
STORY BY: Steven Molaro, Saladin K. Patterson, Tara Hernandez
TELEPLAY BY: Steve Holland, Maria Ferrari, Jeremy Howe
DIRECTED BY: Mark Cendrowski -

Katey Sagal plays Penny's mom

EMMY AWARD WINNER BOB NEWHART RETURNS AS SHELDON’S OBI-WAN KENOBI TO ADVISE HIM ON A DIFFICULT RELATIONSHIP DECISION, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, SEPT. 29
“The Opening Night Excitation” – After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket, on a rebroadcast of THE BIG BANG THEORY, Thursday, Sept. 29 (9:00-9:30 PM, ET/PT), on the CBS Television Network. Emmy Award winner Bob Newhart returns as Sheldon’s Obi-Wan Kenobi. (Originally broadcast 12/17/15.)
RECURRING CAST Kevin Sussman (Stuart)
GUEST CAST: Bob Newhart (Arthur)
Wil Wheaton (Himself)
Jeff Witzke (Movie Goer, O.S)
WRITTEN BY: Steven Molaro Eric Kaplan and Tara Hernandez
TELEPLAY BY: Steve Holland, Jim Reynolds and Maria Ferrari
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3 

LEONARD AND PENNY ARE DRIVEN CRAZY BY SHELDON’S DESPERATE ATTEMPTS TO REMEMBER THE NAME OF A SONG STUCK IN HIS HEAD, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, SEPT. 29
Stephen Merchant Returns as Dave
“The Earworm Reverberation” – Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave (Stephen Merchant) over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, “Footprints on the Moon,” on a rebroadcast of THE BIG BANG THEORY, Thursday, Sept. 29 (8:00-8:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 12/10/15.)
GUEST CAST: Stephen Merchant (Dave)
Yoshi Barrigas (Trent)
WRITTEN BY: Eric Kaplan, Jim Reynolds, Saladin Patterson
TELEPLAY BY: Steve Molaro, Steve Holland, Jeremy Howe
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3 

AIR FORCE REPRESENTATIVE COLONEL WILLIAMS SITS DOWN TO TALK WITH WOLOWITZ, ON “THE BIG BANG THEORY,” MONDAY, SEPT. 26
Dean Norris Returns as Colonel Williams
“The Military Miniaturization” – Colonel Williams (Dean Norris), an Air Force representative from the Department of Material Command sits down to talk with Wolowitz, on THE BIG BANG THEORY, Monday, Sept. 26 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
RECURRING CAST: Dean Norris (Colonel Williams)
GUEST CAST: Josh Zuckerman (Marty)
STORY BY: Chuck Lorre, Eric Kaplan, Jim Reynolds
TELEPLAY BY: Steve Molaro, Steve Holland, Maria Ferrari
DIRECTED BY: Mark Cendrowski
Video Clips: Preview  Sneak Peek #1  Sneak Peek #2 

AFTER SHELDON’S MOTHER AND LEONARD’S FATHER SHARE AN EVENING TOGETHER, EVERYONE DEALS WITH AN AWKWARD MORNING THE NEXT DAY, ON THE 10th SEASON PREMIERE OF “THE BIG BANG THEORY,” MONDAY, SEPT. 19
Guest Stars Include Katey Sagal as Penny’s Mother, Jack McBrayer as Penny’s Brother and Dean Norris as Air Force Representative Colonel Williams
Christine Baranski, Laurie Metcalf, Judd Hirsch and Keith Carradine Return
“The Conjugal Conjecture” – After Sheldon’s mother and Leonard's father share an evening together, everyone deals with an awkward morning the next day. Also, Penny’s family arrives for the wedding ceremony, including her anxiety-ridden mother, Susan (Katey Sagal), and her drug dealing brother, Randall (Jack McBrayer), on the 10th season premiere of THE BIG BANG THEORY, Monday, Sept. 19 (8:00-8:30 PM, ET/PT), on the CBS Television Network. Dean Norris guest stars as Colonel Williams, an Air Force Representative from the Department of Materiel Command. Christine Baranski, Laurie Metcalf, Judd Hirsch and Keith Carradine return.
RECURRING CAST: Kevin Sussman (Stuart)
Christine Baranski (Beverly)
Laurie Metcalf (Mary)
Judd Hirsch (Alfred)
Keith Carradine (Wyatt)
Katey Sagal (Susan)
Jack McBrayer (Randall)
Dean Norris (Colonel Williams)
STORY BY: Chuck Lorre, Steve Holland, Tara Hernandez
TELEPLAY BY: Steve Molaro, Eric Kaplan, Jim Reynolds
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2   

OLDER NEWS:

SECRETS ARE REVEALED WHEN LEONARD, PENNY, SHELDON AND AMY GO ON A WEEKEND GETAWAY, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, SEPT. 12
Editor’s note: The air time of this episode has changed.
“The Big Bear Precipitation” – Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line, on a rebroadcast of THE BIG BANG THEORY, Monday, Sept. 12 (9:01-9:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 4/7/16.)
WRITTEN BY: Chuck Lorre, Dave Goetsch and Tara Hernandez
TELEPLAY BY: Steven Molaro, Steve Holland and Jim Reynolds
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3 

WHEN SHELDON’S LAPTOP DIES, IT LEADS HIM TO SHARE A DEEP SECRET WITH AMY, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, SEPT. 12
Editor’s note: The air time of this episode has changed.
“The Solder Excursion Diversion” – Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Also, Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie, on a rebroadcast of THE BIG BANG THEORY, Monday, Sept. 12 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 3/31/16.)
GUEST CAST: H. Michael Croner (Andre)
WRITTEN BY: Bill Prady, Eric Kaplan, Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland, Saladin K. Patterson
DIRECTED BY: Mark Cendrowski
Video Clips: Preview #1 Preview #2 Sneak Peek #1 Sneak Peek #2 

SHELDON AND AMY HOST A SPECIAL EPISODE OF “FUN WITH FLAGS,” ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, SEPT. 5
“The Valentino Submergence” – Sheldon and Amy host a live episode of Fun with Flags; Leonard and Penny grapple with getting older; Howard and Bernadette find a surprise in their hot tub; and Raj is torn between Emily and the cute girl he met at the Comic Bookstore, on a rebroadcast of THE BIG BANG THEORY, Monday, Sept. 5 (8:00-8:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 2/11/16.)
WRITTEN BY: Steve Molaro, Jim Reynolds, Tara Hernandez
TELEPLAY BY: Steve Holland, Eric Kaplan, Jeremy Howe
DIRECTED BY: Mark Cendrowski

WHEN THE GANG FINDS OUT ABOUT BERNADETTE’S PREGNANCY, THEY CELEBRATE BY SINGING KARAOKE, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, SEPT. 5
“The Positive Negative Reaction” – When the gang finds out about Bernadette’s pregnancy, they celebrate by singing karaoke. Also, Bernadette is concerned when Wolowitz freaks out over her pregnancy announcement, and Wolowitz is convinced he must make more money to provide for the baby, on a rebroadcast of THE BIG BANG THEORY, Monday, Sept. 5 (9:00-9:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 2/18/16.)
WRITTEN BY: Eric Kaplan, Jim Reynolds and Saladin K. Patterson
TELEPLAY BY: Steven Molaro, Steve Holland and Maria Ferrari
DIRECTED BY: Mark Cendrowski

WOLOWITZ HAS SECOND THOUGHTS ABOUT ENTERING INTO A LEGAL PARTNERSHIP WITH SHELDON AND LEONARD, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, SEPT. 8
“The Application Deterioration” – Leonard, Sheldon and Wolowitz run into problems when they file for a patent for their infinite persistence gyroscope. Also, Penny, Amy and Bernadette give Koothrappali dating advice when Emily reaches out to him after their breakup, on a rebroadcast of THE BIG BANG THEORY, Thursday, Sept. 8 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 3/10/16.)
GUEST CAST: Jim Holmes (Tim)
WRITTEN BY: Steven Molaro, Eric Kaplan and Adam Faberman
TELEPLAY BY: Steve Holland, Jim Reynolds and Maria Ferrari
DIRECTED BY: Mark Cendrowski

PENNY STRUGGLES TO BOND WITH LEONARD’S MOTHER WHEN SHE COMES FOR A VISIT, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, AUGUST 25
Christine Baranksi Returns As Leonard’s Mother, Beverly
“The Line Substitution Solution” – Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly (Christine Baranski), comes to town and Penny struggles to make a connection with her, on a rebroadcast of THE BIG BANG THEORY, Thursday, August 25 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 5/5/16.)
GUEST CAST: Blake Anderson (Trevor)
Amanda Payton (Ainsley)
WRITTEN BY: Steve Holland & Saladin K. Patterson & Tara Hernandez
TELEPLAY BY: Steven Molaro & Eric Kaplan & Maria Ferrari
DIRECTED BY: Anthony Rich
Video Clips: Preview Sneak Peek #1 Sneak Peek #2  Sneak Peek #3 

LEONARD, PENNY AND THE GANG FINALLY MEET SHELDON’S “MEEMAW,” ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, AUGUST 18
June Squibb to Guest Star as Sheldon’s ‘Meemaw’
“The Meemaw Materialization” – Sheldon’s thrilled when his Meemaw comes to visit, but his excitement quickly fades when she butts heads with Amy. Also, Raj meets a new girl at the comic book store who makes him question his relationship with Emily, on a rebroadcast of THE BIG BANG THEORY, Thursday, August 18 (8:00-8:31 PM, ET/PT), on the CBS Television Network. June Squibb guest stars as Sheldon’s Meemaw. (Originally broadcast 2/4/16.)
GUEST CAST: June Squibb (Meemaw)
Alessandra Torresani (Claire)
WRITTEN BY: Chuck Lorre, Jim Reynolds and Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland and Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3 

WHEN SHELDON GETS SICK, THE WHOLE GANG SUFFERS, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, AUGUST 11
“The Empathy Optimization” – After having to deal with a sick Sheldon, Leonard, Penny and the gang try to treat themselves to a Sheldon-free weekend, on a rebroadcast of THE BIG BANG THEORY, Thursday, August 11 (8:00-8:31 PM, ET/PT), on the CBS Television Network. (Originally broadcast 1/14/16.)
WRITTEN BY: Chuck Lorre, Eric Kaplan, Dave Geotsch
TELEPLAY BY: Steven Molaro, Steve Holland, Saladin K. Patterson
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 

SHELDON AND BERNADETTE SPEND A NIGHT HANGING OUT TOGETHER WHILE THE REST OF THE GANG GOES TO A WINE TASTING, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JULY 28
“The Fermentation Bifurcation” – The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack (Brian Thomas Smith). Also, Bernadette gets stuck spending the evening with Sheldon when she can’t go wine tasting with the group, and things don’t go as planned when Koothrappali introduces his new girlfriend, Claire (Alessandra Torresani), on a rebroadcast of THE BIG BANG THEORY, Thursday, July 28 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 4/28/16.)
RECURRING CAST: Brian Thomas Smith (Zach)
Alessandra Torresani (Claire)
WRITTEN BY: Steven Molaro, Jim Reynolds, Anthony Del Broccolo
TELEPLAY BY: Chuck Lorre, Steve Holland, Tara Hernandez
DIRECTED BY: Nikki Lorre
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3

THE GANG MUST TAKE SIDES WHEN A FIGHT BETWEEN LEONARD AND SHELDON ESCALATES, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JULY 21
“The Viewing Party Combustion” – Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together, on a rebroadcast of THE BIG BANG THEORY, Thursday, July 21 (8:00-8:31 PM, ET/PT), on the CBS Television Network. (Originally broadcast 4/21/16.)
RECURRING CAST: Kevin Sussman (Stuart)
WRITTEN BY: Eric Kaplan, Maria Ferrari and Jeremy Howe
TELEPLAY BY: Steven Molaro, Steve Holland and Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3

SECRETS ARE REVEALED WHEN LEONARD, PENNY, SHELDON AND AMY GO ON A WEEKEND GETAWAY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JULY 14
“The Big Bear Precipitation” – Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line, on a rebroadcast of THE BIG BANG THEORY, Thursday, July 14 (8:00-8:31 PM, ET/PT), on the CBS Television Network. (Originally broadcast 4/7/16.)
WRITTEN BY: Chuck Lorre, Dave Goetsch and Tara Hernandez
TELEPLAY BY: Steven Molaro, Steve Holland and Jim Reynolds
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3

WHEN SHELDON’S LAPTOP DIES, IT LEADS HIM TO SHARE A DEEP SECRET WITH AMY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JULY 7
“The Solder Excursion Diversion” – Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Also, Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie, on a rebroadcast of THE BIG BANG THEORY, Thursday, July 7 (8:00-8:31 PM, ET/PT), on the CBS Television Network. (Originally broadcast 3/31/16.)
GUEST CAST: H. Michael Croner (Andre)
WRITTEN BY: Bill Prady, Eric Kaplan, Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland, Saladin K. Patterson
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 

WOLOWITZ HAS SECOND THOUGHTS ABOUT ENTERING INTO A LEGAL PARTNERSHIP WITH SHELDON AND LEONARD, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JUNE 30
“The Application Deterioration” – Leonard, Sheldon and Wolowitz run into problems when they file for a patent for their infinite persistence gyroscope. Also, Penny, Amy and Bernadette give Koothrappali dating advice when Emily reaches out to him after their breakup, on a rebroadcast of THE BIG BANG THEORY, Thursday, June 30 (8:00-8:31 PM, ET/PT), on the CBS Television Network. (Originally broadcast 3/10/16.)
GUEST CAST: Jim Holmes (Tim)
WRITTEN BY: Steven Molaro, Eric Kaplan and Adam Faberman
TELEPLAY BY: Steve Holland, Jim Reynolds and Maria Ferrari
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3 

SHELDON AND THE GANG CELEBRATE HIS BIRTHDAY, ON A REBROADCAST OF THE 200TH EPISODE OF “THE BIG BANG THEORY,” THURSDAY, JUNE 23
Christine Baranski, John Ross Bowie, Sara Gilbert and Wil Wheaton Return, Joined By Special Guest Star Adam West Promo
“The Celebration Experimentation” – After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest, on a rebroadcast of the 200th episode of THE BIG BANG THEORY, Thursday, June 23 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Christine Baranski, John Ross Bowie, Sara Gilbert and Wil Wheaton return, joined by special guest star Adam West. (Originally broadcast 2/25/16.)
GUEST CAST: Adam West (Himself)
WRITTEN BY: Chuck Lorre, Eric Kaplan, Jeremy Howe
TELEPLAY BY: Steven Molaro, Steve Holland, Tara Hernandez
DIRECTED BY: Mark Cendrowski

SHELDON AND AMY HOST A SPECIAL EPISODE OF “FUN WITH FLAGS” FOR VALENTINE’S DAY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JUNE 9
“The Valentino Submergence” – Sheldon and Amy host a live Valentine’s Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore, on a rebroadcast of THE BIG BANG THEORY, Thursday, June 9 (8:00-8:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 2/11/16.)
GUEST CAST: Alessandra Torresani (Claire)
Creagen Dow (Maitre D’)
Shane Blades (Customer)
WRITTEN BY: Steve Molaro, Jim Reynolds, Tara Hernandez
TELEPLAY BY: Steve Holland, Eric Kaplan, Jeremy Howe
DIRECTED BY: Mark Cendrowski

LEONARD, PENNY AND THE GANG FINALLY MEET SHELDON’S “MEEMAW,” ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JUNE 2
June Squibb to Guest Star as Sheldon’s ‘Meemaw’
“The Meemaw Materialization” – Sheldon’s thrilled when his Meemaw comes to visit, but his excitement quickly fades when she butts heads with Amy. Also, Raj meets a new girl at the comic book store who makes him question his relationship with Emily, on a rebroadcast of THE BIG BANG THEORY, Thursday, June 2 (8:00-8:30 PM, ET/PT), on the CBS Television Network. June Squibb guest stars as Sheldon’s Meemaw. (Originally broadcast 2/4/16.)
GUEST CAST: June Squibb (Meemaw)
Alessandra Torresani (Claire)
WRITTEN BY: Chuck Lorre, Jim Reynolds and Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland and Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3 

EMMY AWARD WINNER BOB NEWHART RETURNS AS SHELDON’S OBI-WAN KENOBI TO ADVISE HIM ON A DIFFICULT RELATIONSHIP DECISION, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, MAY 19
“The Opening Night Excitation” – After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket, on a rebroadcast of THE BIG BANG THEORY, Thursday, May 19 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Emmy Award winner Bob Newhart returns as Sheldon’s Obi-Wan Kenobi. (Originally broadcast 12/17/15.)
GUEST CAST: Bob Newhart (Arthur)
Wil Wheaton (Himself)
Jeff Witzke (Movie Goer, O.S)
WRITTEN BY: Steven Molaro Eric Kaplan and Tara Hernandez
TELEPLAY BY: Steve Holland, Jim Reynolds and Maria Ferrari
DIRECTED BY: Mark Cendrowski

WOLOWITZ AND BERNADETTE EXPERIENCE “EMPTY NEST SYNDROME” AFTER STUART MOVES OUT, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MAY 16
Jane Kaczmarek Guest Stars as Dr. Gallo
“The Sales Call Sublimation” – Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist (Jane Kaczmarek) on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery, and Wolowitz and Bernadette can’t believe what they are feeling after Stuart moves out, on a rebroadcast of THE BIG BANG THEORY, Monday, May 16 (9:00-9:30 PM, ET/PT), on the CBS Television Network. Jane Kaczmarek guest stars as Dr. Gallo. (Originally broadcast 1/7/16.)
GUEST CAST: Jane Kaczmarek (Dr. Gallo)
WRITTEN BY: Steve Holland, Jim Reynolds and Saladin K. Patterson
TELEPLAY BY: Steven Molaro, Maria Ferrari and Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski

CHAOS ENSUES WHEN LEONARD’S RECENTLY DIVORCED PARENTS AND SHELDON’S DEVOUTLY RELIGIOUS MOTHER COMES TO TOWN, ON THE NINTH SEASON FINALE OF “THE BIG BANG THEORY,” THURSDAY, MAY 12
Emmy Award Winner Judd Hirsch Guest Stars as Leonard’s Father, Alfred
Christine Baranksi Returns as Leonard’s Mother, Beverly and Laurie Metcalf Returns as Sheldon’s Mother, Mary
“The Convergence Convergence” - Chaos ensues when Leonard’s recently divorced parents, Alfred (Judd Hirsch) and Beverly (Christine Baranski), and Sheldon’s devoutly religious mother, Mary (Laurie Metcalf), come to town. Also, Wolowitz and Koothrappali think the government is out to get them when they are contacted about their guidance system, on the ninth season finale of THE BIG BANG THEORY, Thursday, May 12 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Christine Baranski (Beverly)
Laurie Metcalf (Mary)
GUEST CAST: Judd Hirsch (Alfred)
Marcus Folmar (Police Officer)
WRITTEN BY: Steven Molaro & Tara Hernandez & Adam Faberman
TELEPLAY BY: Chuck Lorre & Steve Holland & Jeremy Howe
DIRECTED BY: Mark Cendrowski
Video Clips: Preview  Sneak Peek #1 Sneak Peek #2  Sneak Peek #3 

LEONARD AND PENNY ARE DRIVEN CRAZY BY SHELDON’S DESPERATE ATTEMPTS TO REMEMBER THE NAME OF A SONG STUCK IN HIS HEAD, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MAY 9
Stephen Merchant Returns as Dave
“The Earworm Reverberation” – Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave (Stephen Merchant) over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, “Footprints on the Moon,” on a rebroadcast of THE BIG BANG THEORY, Monday, May 9 (9:00-9:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 12/10/15.)
GUEST CAST: Stephen Merchant (Dave)
Yoshi Barrigas (Trent)
WRITTEN BY: Eric Kaplan, Jim Reynolds, Saladin Patterson
TELEPLAY BY: Steve Molaro, Steve Holland, Jeremy Howe
DIRECTED BY: Mark Cendrowski

PENNY STRUGGLES TO BOND WITH LEONARD’S MOTHER WHEN SHE COMES FOR A VISIT, ON “THE BIG BANG THEORY,” THURSDAY, MAY 5
Christine Baranksi Returns As Leonard’s Mother, Beverly
“The Line Substitution Solution” – Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly (Christine Baranski), comes to town and Penny struggles to make a connection with her, on THE BIG BANG THEORY, Thursday, May 5 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
Christine Baranski (Beverly)
GUEST CAST: Blake Anderson (Trevor)
Amanda Payton (Ainsley)
WRITTEN BY: Steve Holland & Saladin K. Patterson & Tara Hernandez
TELEPLAY BY: Steven Molaro & Eric Kaplan & Maria Ferrari
DIRECTED BY: Anthony Rich

CBS WITH AMY OUT ON A DATE WITH A MYSTERY MAN, SHELDON ENLISTS THE HELP OF WOLOWITZ AND KOOTHRAPPALI TO FIND A NEW GIRLFRIEND, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, MAY 2
Stephen Merchant Guest Stars as the Mystery Man, Dave
Analeigh Tipton Guest Stars as Vanessa
"The Mystery Date Observation" - Sheldon, Wolowitz and Koothrappali post an online advertisement to find Sheldon a new girlfriend. Also, when Amy is coy with details about a guy she is dating, Penny and Bernadette decide to spy, on a rebroadcast of THE BIG BANG THEORY, Monday, May 2 (9:00-9:30 PM, ET/PT), on the CBS Television Network. Stephen Merchant guest stars as the mystery man, Dave, and Analeigh Tipton guest stars as Vanessa. (Originally broadcast 11/12/15.)
GUEST CAST: Stephen Merchant (Dave)
Analeigh Tipton (Vanessa)
WRITTEN BY: Steven Molaro, Eric Kaplan and Jim Reynolds
TELEPLAY BY: Chuck Lorre, Steve Holland and Tara Hernandez
DIRECTED BY: Mark Cendrowski

WOLOWITZ AND BERNADETTE EXPERIENCE “EMPTY NEST SYNDROME” AFTER STUART MOVES OUT, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MAY 16
Jane Kaczmarek Guest Stars as Dr. Gallo
“The Sales Call Sublimation” – Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist (Jane Kaczmarek) on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery, and Wolowitz and Bernadette can’t believe what they are feeling after Stuart moves out, on a rebroadcast of THE BIG BANG THEORY, Monday, May 16 (9:00-9:30 PM, ET/PT), on the CBS Television Network. Jane Kaczmarek guest stars as Dr. Gallo. (Originally broadcast 1/7/16.)
GUEST CAST: Jane Kaczmarek (Dr. Gallo)
WRITTEN BY: Steve Holland, Jim Reynolds and Saladin K. Patterson
TELEPLAY BY: Steven Molaro, Maria Ferrari and Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski

"The Fermentation Bifurcation" is the twenty-second episode of the ninth season of the American sitcom The Big Bang Theory. The episode will air on Thursday, April 28, 2016.
When Leonard, Penny, Amy, Howard, Raj and Claire all go out to a wine tasting party and they run into Zack who hits on Claire. Meanwhile, Bernadette and Sheldon spend the night at 4A where they play games and end up having a fun night. Preview
Guest starring: Brian Smith as Zack Johnson
Alessandra Torresani as Claire
Teleplay: Steven Molaro, Steve Holland & Jim Reynolds
Story: Chuck Lorre, Dave Goetsch & Tara Hernandez
More

LEONARD AND PENNY ARE DRIVEN CRAZY BY SHELDON’S DESPERATE ATTEMPTS TO REMEMBER THE NAME OF A SONG STUCK IN HIS HEAD, ON A REBROADCAST OF “THE BIG BANG THEORY,” AT A SPECIAL TIME ON THURSDAY, APRIL 25
Stephen Merchant Returns as Dave
“The Earworm Reverberation” – Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave (Stephen Merchant) over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, “Footprints on the Moon,” on a rebroadcast of THE BIG BANG THEORY, at a special time Thursday, April 25 (8:30-9:00 PM, ET/PT), on the CBS Television Network. (Originally broadcast 12/10/15.)
GUEST CAST: Stephen Merchant (Dave)
Yoshi Barrigas (Trent)
WRITTEN BY: Eric Kaplan, Jim Reynolds, Saladin Patterson
TELEPLAY BY: Steve Molaro, Steve Holland, Jeremy Howe
DIRECTED BY: Mark Cendrowski

THE GANG MUST TAKE SIDES WHEN A FIGHT BETWEEN LEONARD AND SHELDON ESCALATES, ON “THE BIG BANG THEORY,” THURSDAY, APRIL 21
“The Viewing Party Combustion” – Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together, on THE BIG BANG THEORY, Thursday, April 21 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
WRITTEN BY: Eric Kaplan, Maria Ferrari and Jeremy Howe
TELEPLAY BY: Steven Molaro, Steve Holland and Tara Hernandez
DIRECTED BY: Mark Cendrowski

SHELDON AND AMY SPEND THANKSGIVING AT THE AQUARIUM TOGETHER AS FRIENDS, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, APRIL 14
Business Magnate and Inventor Elon Musk Guest Stars as Himself
“The Platonic Permutation” – Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought, on a rebroadcast of THE BIG BANG THEORY, Thursday, April 14 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Business magnate and inventor Elon Musk appears as himself. (Originally broadcast 11/19/15.)
GUEST CAST: Elon Musk (Himself)
Wayne Wilderson (Travis)
WRITTEN BY: Jim Reynolds, Jeremy Howe and Tara Hernandez
TELEPLAY BY: Steve Holland, Maria Ferrari and Adam Faberman
DIRECTED BY: Mark Cendrowski

EW Spoilers

SECRETS ARE REVEALED WHEN LEONARD, PENNY, SHELDON AND AMY GO ON A WEEKEND GETAWAY, ON “THE BIG BANG THEORY,” THURSDAY, APRIL 7
“The Big Bear Precipitation” – Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line, on THE BIG BANG THEORY, Thursday, April 7 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
WRITTEN BY: Chuck Lorre, Dave Goetsch and Tara Hernandez
TELEPLAY BY: Steven Molaro, Steve Holland and Jim Reynolds
DIRECTED BY: Mark Cendrowski
Video Clips: Preview  Sneak Peek #1  Sneak Peek #2 

LEONARD AND PENNY ARE SHOCKED TO LEARN THAT SHELDON HAD AN ENGAGEMENT RING FOR AMY, ON A REBROADCAST OF “THE BIG BANG THEORY,” AT A SPECIAL NIGHT AND TIME, MONDAY, APRIL 4
Wil Wheaton, Adam Nimoy and Stephen Merchant Guest Star
“The Spock Resonance” – While being interviewed for a documentary about Spock from “Star Trek,” Sheldon struggles to suppress his emotions about his recent break-up with Amy. Also, Wolowitz and Bernadette butt heads over remodeling his childhood home, on a rebroadcast of THE BIG BANG THEORY, on a special night and time, Monday, April 4 (8:30-9:00 PM, ET/PT), on the CBS Television Network. Wil Wheaton, Adam Nimoy and Stephen Merchant guest star. (Originally broadcast 11/5/15.)
GUEST CAST: Adam Nimoy (Himself)
Stephen Merchant (Dave)
WRITTEN BY: Chuck Lorre, Jim Reynolds and Tara Hernandez
TELEPLAY BY: Steven Molaro, Steve Holland and Jeremy Howe
DIRECTED BY: Nikki Lorre

SHELDON FINDS HIMSELF IN AN AWKWARD POSITION WHEN BARRY KRIPKE EXPRESSES INTEREST IN AMY, ON A REBROADCAST OF “THE BIG BANG THEORY,” ON A SPECIAL NIGHT, MONDAY, APRIL 4
“The Perspiration Implementation” – The guys take a fencing lesson from Barry Kripke and Sheldon finds himself in an awkward position when Kripke expresses interest in Amy. Also, when Stuart struggles to get female customers at the Comic Book Store, Penny, Amy and Bernadette come by to help him out, on a rebroadcast of THE BIG BANG THEORY, on a special night, Monday, April 4 (8:00-8:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 10/19/15.)
GUEST CAST: Megan Heyn (Natalie)
Patrika Darbo (Grace)
Rebecca Ann Johnson (Attractive Red Head)
WRITTEN BY: Chuck Lorre, Eric Kaplan and Maria Ferrari
TELEPLAY BY: Steve Holland, Jim Reynolds and Saladin Patterson
DIRECTED BY: Mark Cendrowski

WHEN SHELDON’S LAPTOP DIES, IT LEADS HIM TO SHARE A DEEP SECRET WITH AMY, ON “THE BIG BANG THEORY,” THURSDAY, MARCH 31
“The Solder Excursion Diversion” – Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Also, Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie, on THE BIG BANG THEORY, Thursday, March 31 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
GUEST CAST: H. Michael Croner (Andre)
WRITTEN BY: Bill Prady, Eric Kaplan, Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland, Saladin K. Patterson
DIRECTED BY: Mark Cendrowski

WOLOWITZ HAS SECOND THOUGHTS ABOUT ENTERING INTO A LEGAL PARTNERSHIP WITH SHELDON AND LEONARD, ON “THE BIG BANG THEORY,” THURSDAY, MARCH 10
“The Application Deterioration” – Leonard, Sheldon, and Wolowitz run into problems when they file for a patent for their infinite persistence gyroscope. Also, Penny, Amy and Bernadette give Koothrappali dating advice when Emily reaches out to him after their breakup, on THE BIG BANG THEORY, Thursday, March 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Laura Spencer (Emily)
Alessandra Torresani (Claire)
GUEST CAST: Jim Holmes (Tim)
WRITTEN BY: Steven Molaro, Eric Kaplan and Adam Faberman
TELEPLAY BY: Steve Holland, Jim Reynolds and Maria Ferrari
DIRECTED BY: Mark Cendrowski

SHELDON SEARCHES FOR A NEW ROOMMATE WHEN PENNY AND LEONARD ANNOUNCE THEY’RE MOVING IN TOGETHER, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MARCH 7
“The 2003 Approximation” – Sheldon learns of an impending change in his living arrangements and decides to revert back to 2003, a simpler time before he met Leonard and Penny. Also, Howard and Raj form a band to play at the Comic Book Store, on a rebroadcast of THE BIG BANG THEORY, Monday, March 7 (8:30-9:00 PM, ET/PT), on the CBS Television Network. (Originally broadcast 10/12/15.)
RECURRING CAST: Kevin Sussman (Stuart)
Laura Spencer (Emily)
GUEST CAST: Craig Welzbacher (Candidate #1)
Kurt Koehler (Candidate #2)
Arshad Aslam (Candidate #3)
WRITTEN BY: Chuck Lorre, Steve Holland and Eric Kaplan
TELEPLAY BY: Steven Molaro, Maria Ferrari and Tara Hernandez
DIRECTED BY: Mark Cendrowski

THE BOYS SURPRISE LEONARD BY TAKING HIM TO MEXICO FOR A BELATED BACHELOR PARTY, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MARCH 7
Keith Carradine Returns as Penny’s Father, Wyatt
“The Bachelor Party Corrosion” – The guys’ science skills are put to the test when they get a flat tire during Leonard’s bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard, on a rebroadcast of THE BIG BANG THEORY, Monday, March 7 (8:00-8:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 10/5/15.)
GUEST CAST: Keith Carradine (Wyatt)
WRITTEN BY: Dave Goetsch, Jim Reynolds, Jeremy Howe
TELEPLAY BY: Steven Molaro, Steve Holland, Eric Kaplan
DIRECTED BY: Mark Cendrowski

WITH AMY OUT ON A DATE WITH A MYSTERY MAN, SHELDON ENLISTS THE HELP OF WOLOWITZ AND KOOTHRAPPALI TO FIND A NEW GIRLFRIEND, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, MARCH 3
Stephen Merchant Guest Stars as the Mystery Man, Dave
Analeigh Tipton Guest Stars as Vanessa
“The Mystery Date Observation” – Sheldon, Wolowitz and Koothrappali post an online advertisement to find Sheldon a new girlfriend. Also, when Amy is coy with details about a guy she is dating, Penny and Bernadette decide to spy, on a rebroadcast of THE BIG BANG THEORY, Thursday, March 3 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Stephen Merchant guest stars as the mystery man, Dave, and Analeigh Tipton guest stars as Vanessa. (Originally broadcast 11/12/15.)
GUEST CAST: Stephen Merchant (Dave)
Analeigh Tipton (Vanessa)
WRITTEN BY: Steven Molaro, Eric Kaplan and Jim Reynolds
TELEPLAY BY: Chuck Lorre, Steve Holland and Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3   

CBS SHELDON AND THE GANG CELEBRATE HIS BIRTHDAY, ON THE 200TH EPISODE OF “THE BIG BANG THEORY,” THURSDAY, FEB. 25
Christine Baranski, John Ross Bowie, Sara Gilbert and Wil Wheaton Return, Joined By Special Guest Star Adam West
“The Celebration Experimentation” – After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest, on the 200th episode of THE BIG BANG THEORY, Thursday, Feb. 25 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Christine Baranski, John Ross Bowie, Sara Gilbert and Wil Wheaton return, joined by special guest star Adam West.
RECURRING CAST Kevin Sussman (Stuart)
Christine Baranski (Beverly)
John Ross Bowie (Kripke)
Sara Gilbert (Leslie Winkle)
Wil Wheaton (Himself)
GUEST CAST: Adam West (Himself)
WRITTEN BY: Chuck Lorre, Eric Kaplan, Jeremy Howe
TELEPLAY BY: Steven Molaro, Steve Holland, Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips Preview Sneak Peek #1  Sneak Peek #2  Sneak Peek #3  CBS WHEN THE GANG FINDS OUT ABOUT BERNADETTE’S PREGNANCY, THEY CELEBRATE BY SINGING KARAOKE, ON “THE BIG BANG THEORY,” THURSDAY, FEB. 18
“The Positive Negative Reaction” – When the gang finds out about Bernadette’s pregnancy, they celebrate by singing karaoke. Also, Bernadette is concerned when Wolowitz freaks out over her pregnancy announcement, and Wolowitz is convinced he must make more money to provide for the baby, on THE BIG BANG THEORY, Thursday, Feb. 18 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
WRITTEN BY: Eric Kaplan, Jim Reynolds, Saladin K. Patterson
TELEPLAY BY: Steven Molaro, Steve Holland, Maria Ferrari
DIRECTED BY: Mark Cendrowski

CBS LEONARD AND PENNY ARE SHOCKED TO LEARN THAT SHELDON HAD AN ENGAGEMENT RING FOR AMY, ON A REBROADCAST OF “THE BIG BANG THEORY,” ON A SPECIAL NIGHT AND TIME, WEDNESDAY, FEB. 17
Wil Wheaton, Adam Nimoy and Stephen Merchant Guest Star
“The Spock Resonance” – While being interviewed for a documentary about Spock from “Star Trek,” Sheldon struggles to suppress his emotions about his recent break-up with Amy. Also, Wolowitz and Bernadette butt heads over remodeling his childhood home, on a rebroadcast of THE BIG BANG THEORY, on a special night and time, Wednesday, Feb. 17 (9:30-10:00 PM, ET/PT), on the CBS Television Network. Wil Wheaton, Adam Nimoy and Stephen Merchant guest star. (Originally broadcast 11/5/15.)
RECURRING CAST: Wil Wheaton (Himself)
Casey Sander (Mr. Rostenkowski)
GUEST CAST:
Adam Nimoy (Himself)
Stephen Merchant (Dave)
WRITTEN BY: Chuck Lorre, Jim Reynolds and Tara Hernandez
TELEPLAY BY: Steven Molaro, Steve Holland and Jeremy Howe
DIRECTED BY: Nikki Lorre

CBS LEONARD AND SHELDON ARE FORCED TO MAKE A BLACK MARKET PURCHASE IN ORDER TO COMPLETE AN EXPERIMENT, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, FEB. 11
Editor’s note: This replaces the previously scheduled programming.
Michael Rapaport Guest Stars as Kenny, a Black Market Dealer
“The Helium Insufficiency” – In the midst of a nationwide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man, on a rebroadcast of THE BIG BANG THEORY, Thursday, Feb. 11 (9:30-10:00 PM, ET/PT), on the CBS Television Network. Michael Rapaport guest stars Kenny, a black market dealer. (Originally broadcast 10/26/15.)
GUEST CAST: Michael Rapaport (Kenny)
Elena Campbell-Martinez (Maria)
WRITTEN BY: Steve Holland, Maria Ferrari and Anthony Del Broccolo
TELEPLAY BY: Steven Molaro, Eric Kaplan and Jim Reynolds
DIRECTED BY: Mark Cendrowski

CBS SHELDON AND AMY HOST A SPECIAL EPISODE OF “FUN WITH FLAGS” FOR VALENTINE’S DAY, ON “THE BIG BANG THEORY,” THURSDAY, FEB. 11
“The Valentino Submergence” – Sheldon and Amy host a live Valentine’s Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore, on THE BIG BANG THEORY, Thursday, Feb. 11 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
WRITTEN BY: Steve Molaro, Jim Reynolds, Tara Hernandez
TELEPLAY BY: Steve Holland, Eric Kaplan, Jeremy Howe
DIRECTED BY: Mark Cendrowski
Video Clips: Preview  Sneak Peek #1  Sneak Peek #2  Spoilers

AFTER AMY BREAKS UP WITH SHELDON, HE TRIES TO RETALIATE USING “FUN WITH FLAGS,” ON A REBROADCAST OF “THE BIG BANG THEORY,” ON A SPECIAL NIGHT AND TIME, SUNDAY, FEB. 7
“The Separation Oscillation” – Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny’s mind at ease. Also, Sheldon films a special episode of “Fun with Flags” after his breakup with Amy, and Bernadette feels guilty about withholding a secret from Penny, on a rebroadcast of THE BIG BANG THEORY, on a special night and time, Sunday, Feb. 7 (11:00-11:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 9/28/15.)
GUEST CAST: Melissa Tang (Mandy)
WRITTEN BY: Steven Molaro, Steve Holland, Tara Hernandez
TELEPLAY BY: Chuck Lorre, Jim Reynolds, Maria Ferrari
DIRECTED BY: Mark Cendrowski

LEONARD, PENNY AND THE GANG FINALLY MEET SHELDON’S “MEEMAW,” ON “THE BIG BANG THEORY,” THURSDAY, FEB. 4
June Squibb to Guest Star as Sheldon’s ‘Meemaw’
“The Meemaw Materialization” – Sheldon’s thrilled when his Meemaw comes to visit, but his excitement quickly fades when she butts heads with Amy. Also, Raj meets a new girl at the comic book store who makes him question his relationship with Emily, on THE BIG BANG THEORY, Thursday, Feb. 4 (8:00-8:31 PM, ET/PT), on the CBS Television Network. June Squibb guest stars as Sheldon’s Meemaw.
GUEST CAST: June Squibb (Meemaw)
Alessandra Torresani (Claire)
WRITTEN BY: Chuck Lorre, Jim Reynolds and Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland and Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3         

SHELDON FINDS HIMSELF IN AN AWKWARD POSITION WHEN BARRY KRIPKE EXPRESSES INTEREST IN AMY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JAN. 28
Editor’s note: This replaces the previously scheduled programming.
“The Perspiration Implementation”– The guys take a fencing lesson from Barry Kripke and Sheldon finds himself in an awkward position when Kripke expresses interest in Amy. Also, when Stuart struggles to get female customers at the Comic Book Store, Penny, Amy and Bernadette come by to help him out, on a rebroadcast of THE BIG BANG THEORY, Thursday, Jan. 28 (9:00-9:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 10/19/15.)
RECURRING CAST: Kevin Sussman (Stuart)
John Ross Bowie (Kripke)
GUEST CAST: Megan Heyn (Natalie)
Patrika Darbo (Grace)
Rebecca Ann Johnson (Attractive Red Head)
WRITTEN BY: Chuck Lorre, Eric Kaplan and Maria Ferrari
TELEPLAY BY: Steve Holland, Jim Reynolds and Saladin Patterson
DIRECTED BY: Mark Cendrowski

THE BOYS SURPRISE LEONARD BY TAKING HIM TO MEXICO FOR A BELATED BACHELOR PARTY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JAN. 21
Editor’s note: This episode replaces the previously scheduled epsiode.
Keith Carradine Returns as Penny’s Father, Wyatt
“The Bachelor Party Corrosion” – The guys’ science skills are put to the test when they get a flat tire during Leonard’s bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard, on a rebroadcast of THE BIG BANG THEORY, Thursday, Jan. 21 (8:00-8:31 PM, ET/PT), on the CBS Television Network. (Originally broadcast 10/5/15.)
GUEST CAST: Keith Carradine (Wyatt)
WRITTEN BY: Dave Goetsch, Jim Reynolds and Jeremy Howe
TELEPLAY BY: Steven Molaro, Steve Holland and Eric Kaplan
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2

WHEN SHELDON GETS SICK, THE WHOLE GANG SUFFERS, ON “THE BIG BANG THEORY,” THURSDAY, JAN. 14
“The Empathy Optimization” – After having to deal with a sick Sheldon, Leonard, Penny and the gang try to treat themselves to a Sheldon-free weekend, on THE BIG BANG THEORY, Thursday, Jan. 14 (8:00-8:31, ET/PT), on the CBS Television Network.
RECURRING CAST Kevin Sussman (Stuart)
Laura Spencer (Emily)
WRITTEN BY: Chuck Lorre, Eric Kaplan, Dave Geotsch
TELEPLAY BY: Steven Molaro, Steve Holland, Saladin K. Patterson
DIRECTED BY: Mark Cendrowski

AFTER LEONARD CONFESSES HE KISSED ANOTHER GIRL ON THE NORTH SEA, PENNY MUST DECIDE IF SHE WANTS TO GO THROUGH WITH THE WEDDING, ON A REBROADCAST OF “THE BIG BANG THEORY,” ON A SPECIAL NIGHT AND TIME, MONDAY, JAN. 11
Editor’s note: This episode replaces previously scheduled programming.
Laurie Metcalf Returns as Sheldon’s Mother, Mary
“The Matrimonial Momentum” – After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn’t know how to act after Amy pushes pause on their relationship, on a rebroadcast of THE BIG BANG THEORY, on a special night and time, Monday, Jan. 11 (8:30-9:00 PM, ET/PT), on the CBS Television Network. Laurie Metcalf returns as Sheldon’s mother, Mary. (Originally broadcast 9/21/15.)
RECURRING CAST: Kevin Sussman (Stuart)
Laurie Metcalf (Mary)
GUEST CAST: Jim Meskimen (Minister)
Louise Claps (Receptionist)
WRITTEN BY: Chuck Lorre, Jim Reynolds and Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland and Eric Kaplan
DIRECTED BY: Mark Cendrowski

AFTER AMY BREAKS UP WITH SHELDON, HE TRIES TO RETALIATE USING “FUN WITH FLAGS,” ON A REBROADCAST OF “THE BIG BANG THEORY,” ON A SPECIAL NIGHT, MONDAY, JAN. 11
Editor’s note: This episode replaces previously scheduled programming.
“The Separation Oscillation” – Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny’s mind at ease. Also, Sheldon films a special episode of “Fun with Flags” after his breakup with Amy, and Bernadette feels guilty about withholding a secret from Penny, on a rebroadcast of THE BIG BANG THEORY, on a special night, Monday, Jan. 11 (8:00-8:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 9/28/15.)
GUEST CAST: Melissa Tang (Mandy)
WRITTEN BY: Steven Molaro, Steve Holland and Tara Hernandez
TELEPLAY BY: Chuck Lorre, Jim Reynolds and Maria Ferrari
DIRECTED BY: Mark Cendrowski

WOLOWITZ AND BERNADETTE EXPERIENCE “EMPTY NEST SYNDROME” AFTER STUART MOVES OUT, ON “THE BIG BANG THEORY,” THURSDAY, JAN. 7
Jane Kaczmarek Guest Stars as Dr. Gallo
“The Sales Call Sublimation” – Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist (Jane Kaczmarek) on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery, and Wolowitz and Bernadette can’t believe what they are feeling after Stuart moves out, on THE BIG BANG THEORY, Thursday, Jan. 7 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Jane Kaczmarek guest stars as Dr. Gallo.
RECURRING CAST: Kevin Sussman (Stuart)
GUEST CAST: Jane Kaczmarek (Dr. Gallo)
WRITTEN BY: Steve Holland, Jim Reynolds and Saladin K. Patterson
TELEPLAY BY: Steven Molaro, Maria Ferrari and Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski
Spoilers From http://bigbangtheory.wikia.com
 Preview

SHELDON PUSHES LEONARD AND PENNY TO CHOOSE A DATE FOR THEIR WEDDING, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, DEC. 31
“The Commitment Determination” – Sheldon pushes Leonard and Penny to choose a date for their wedding and deals with dramatic changes in his own relationship with Amy, on a rebroadcast of THE BIG BANG THEORY, Thursday, Dec. 31 (8:00-8:31 PM, ET/PT), on the CBS Television Network. (Originally broadcast 5/7/15.)
WRITTEN BY: Chuck Lorre, Jim Reynolds and Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland and Eric Kaplan
DIRECTED BY: Mark Cendrowski

LEONARD AND WOLOWITZ NEARLY COME TO BLOWS AFTER A POTENTIAL DISASTER AT THE UNIVERSITY AND TURN TO RAJ FOR HELP, ON A REBROADCAST OF “THE BIG BANG THEORY,” ON A SPECIAL NIGHT, MONDAY, DEC. 21
“The Clean Room Infiltration” – Leonard and Wolowitz nearly come to blows and turn to Raj for help in dealing with a work emergency. Meanwhile, Amy throws an authentic Victorian Christmas party, and Sheldon seeks revenge on her for making him celebrate the holidays, on a rebroadcast of THE BIG BANG THEORY, on a special night, Monday, Dec. 21 (8:00-8:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 12/11/14.)
RECURRING CAST: Brian George (Dr. Koothrappali)
GUEST CAST: Dakin Matthews (Santa)
WRITTEN BY: Maria Ferrari, Tara Hernandez and Jeremy Howe
TELEPLAY BY: Eric Kaplan, Jim Reynolds and Steve Holland
DIRECTED BY: Mark Cendrowski

KOOTHRAPPALI FACES A THREAT TO HIS CUSHY LIFESTYLE WHEN HE IS CUT OFF FROM THE FAMILY FORTUNE, ON A REBROADCAST OF “THE BIG BANG THEORY,” ON A SPECIAL NIGHT AND TIME, MONDAY, DEC. 21
“The Graduation Transmission” – Wolowitz questions his engineering abilities when he and Sheldon can’t get a toy drone to fly. Meanwhile, a cancelled flight nearly prevents Leonard from giving the commencement address at his former high school, and Raj pits his parents against each other when his father cuts him off financially, on a rebroadcast of THE BIG BANG THEORY, on a special night and time, Monday, Dec. 21 (8:30-9:00 PM, ET/PT), on the CBS Television Network. (Originally broadcast 4/23/15.)
RECURRING CAST: Brian George (Dr. Koothrapali)
Alice Amter (Mrs. Koothrapali)
GUEST CAST: Robert Clotworthy (Headmaster Edwards)
Matt Mittelman (Tech Support, V.O)
Katherine Von Till (Tech Support, V.O Recording)
WRITTEN BY: Chuck Lorre, Dave Goetsch and Anthony Del Broccolo
TELEPLAY BY: Steven Molaro, Steve Holland and Eric Kaplan
DIRECTED BY: Anthony Rich

SPARKS FLY WHEN SHELDON AND LEONARD’S MOTHERS FINALLY MEET, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, DEC. 24
Laurie Metcalf Returns as Sheldon’s Mother, Mary, and Christine Baranski Returns as Leonard’s Mother, Beverly
“The Maternal Combustion” – Personalities collide when Sheldon and Leonard’s mothers finally meet. Meanwhile, Howard finally decides to “man up” and do his fair share of the housework – but not without a little help from his friends, on a rebroadcast of THE BIG BANG THEORY, Thursday, Dec. 24 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Emmy Award winners Laurie Metcalf and Christine Baranski return as Sheldon’s and Leonard’s mothers, respectively. (Originally broadcast 4/30/15.)
RECURRING CAST: Kevin Sussman (Stuart)
Christine Baranski (Beverly)
Laurie Metcalf (Mary)
WRITTEN BY: Steven Molaro, Tara Hernandez, Jeremy Howe
TELEPLAY BY: Chuck Lorre, Jim Reynolds, Maria Ferrari
DIRECTED BY: Anthony Rich

EMMY AWARD WINNER BOB NEWHART RETURNS AS SHELDON’S OBI-WAN KENOBI TO ADVISE HIM ON A DIFFICULT RELATIONSHIP DECISION, ON “THE BIG BANG THEORY,” THURSDAY, DEC. 17  Preview
“The Opening Night Excitation” – After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket, on THE BIG BANG THEORY, Thursday, Dec.17 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Emmy Award winner Bob Newhart returns as Sheldon’s Obi-Wan Kenobi.
GUEST CAST: Bob Newhart (Arthur)
Wil Wheaton (Himself)
Jeff Witzke (Movie Goer, O.S)
WRITTEN BY: Steven Molaro Eric Kaplan and Tara Hernandez
TELEPLAY BY: Steve Holland, Jim Reynolds and Maria Ferrari
DIRECTED BY: Mark Cendrowski

SHELDON AND AMY SPEND THANKSGIVING AT THE AQUARIUM TOGETHER AS FRIENDS, ON “THE BIG BANG THEORY,” THURSDAY, NOV. 19
Business Magnate and Inventor Elon Musk Guest Stars as Himself
“The Platonic Permutation” – Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought, on THE BIG BANG THEORY, Thursday, Nov. 19 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Business magnate and inventor Elon Musk appears as himself.
RECURRING CAST: Laura Spencer (Emily)
GUEST CAST: Elon Musk (Himself)
Wayne Wilderson (Travis)
WRITTEN BY: Jim Reynolds, Jeremy Howe and Tara Hernandez
TELEPLAY BY: Steve Holland, Maria Ferrari and Adam Faberman
DIRECTED BY: Mark Cendrowski

WITH AMY OUT ON A DATE WITH A MYSTERY MAN, SHELDON ENLISTS THE HELP OF WOLOWITZ AND KOOTHRAPPALI TO FIND A NEW GIRLFRIEND, ON “THE THE BIG BANG THEORY,” THURSDAY, NOV. 12
Stephen Merchant Guest Stars as the Mystery Man, Dave; Analeigh Tipton Guest Stars as Vanessa
“The Mystery Date Observation” – Sheldon, Wolowitz and Koothrappali post an online advertisement to find Sheldon a new girlfriend. Also, when Amy is coy with details about a guy she is dating, Penny and Bernadette decide to spy, on THE BIG BANG THEORY, Thursday, Nov. 12 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Stephen Merchant guest stars as the mystery man, Dave, and Analeigh Tipton guest stars as Vanessa.  WRITTEN BY: Steven Molaro, Eric Kaplan and Jim Reynolds
TELEPLAY BY: Chuck Lorre, Steve Holland and Tara Hernandez
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3      

CBS THE BIG BANG THEORY : THE MYSTERY DATE OBSERVATION airing 11/12/15 (Th.) 8:00 PM :  Amy has a formal date which Penny and Bernadette and a reluctant Leonard, secretly spy on. Sheldon has Howard and Raj help him find a new girlfriend since they found Amy for him. More Details
Guest star(s) Stephen Merchant as Dave and Analeigh Tipton as Vanessa.
Teleplay by Chuck Lorre, Steve Holland & Tara Hernandez
Story by Steven Molaro, Eric Kaplan & Jim Reynolds
Directed by Mark Cendrowski 

PENNY CONTEMPLATES A RETURN TO ACTING, ON A REBROADCAST OF “THE BIG BANG THEORY,” ON A SPECIAL NIGHT AND TIME, THURSDAY, NOV. 5
“The Communication Deterioration” – When Raj is asked to create a message in case a NASA mission discovers alien life, the guys fight over what he should do. Also, Penny is torn between auditioning for a movie or keeping her successful pharmaceutical sales job, on a rebroadcast of THE BIG BANG THEORY, on a special night and time, Thursday, Nov. 5 (9:30-10:00 PM, ET/PT), on the CBS Television Network. (Originally broadcast 4/16/15.)
GUEST CAST:
Sara Erikson (Gwen)
Kelli Goss (Chelsea)
Phoebe Neidhardt (Casting Assistant)
Mark Maitre (Alien)
Jeff Jingle (Alien #2)
WRITTEN BY: Dave Goetsch, Steve Holland and Jeremy Howe
TELEPLAY BY: Steven Molaro, Eric Kaplan and Jim Reynolds

LEONARD AND PENNY ARE SHOCKED TO LEARN THAT SHELDON HAD AN ENGAGEMENT RING FOR AMY, WHEN “THE BIG BANG THEORY” MOVES TO ITS REGULAR TIME PERIOD, THURSDAY, NOV. 5  Preview
Wil Wheaton, Adam Nimoy and Stephen Merchant Guest Star
“The Spock Resonance” – While being interviewed for a documentary about Spock from “Star Trek,” Sheldon struggles to suppress his emotions about his recent break-up with Amy. Also, Wolowitz and Bernadette butt heads over remodeling his childhood home, on THE BIG BANG THEORY, Thursday, Nov. 5 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Wil Wheaton, Adam Nimoy and Stephen Merchant guest star.
RECURRING CAST:
Wil Wheaton (Himself)
Casey Sander (Mr. Rostenkowski)
GUEST CAST:
Adam Nimoy (Himself)
Stephen Merchant (Dave)
WRITTEN BY: Chuck Lorre, Jim Reynolds and Tara Hernandez
TELEPLAY BY: Steven Molaro, Steve Holland and Jeremy Howe
DIRECTED BY: Nikki Lorre

CBS LEONARD AND SHELDON ARE FORCED TO MAKE A BLACK MARKET PURCHASE IN ORDER TO COMPLETE AN EXPERIMENT, ON “THE BIG BANG THEORY,” MONDAY, OCT. 26
Editor's note: The end time for this episode has changed.
Michael Rapaport Guest Stars as Kenny, a Black Market Dealer
“The Helium Insufficiency” – In the midst of a nation-wide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man, on THE BIG BANG THEORY, Monday, Oct. 26 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Michael Rapaport guest stars Kenny, a black market dealer.
WRITTEN BY: Steve Holland, Maria Ferrari and Anthony Del Broccolo
TELEPLAY BY: Steven Molaro, Eric Kaplan and Jim Reynolds
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3

SHELDON FINDS HIMSELF IN AN AWKWARD POSITION WHEN BARRY KRIPKE EXPRESSES INTEREST IN AMY, ON "THE BIG BANG THEORY," MONDAY, OCT. 19
"The Perspiration Implementation" The guys take a fencing lesson from Barry Kripke and Sheldon finds himself in an awkward position when Kripke expresses interest in Amy. Also, when Stuart struggles to get female customers at the Comic Book Store, Penny, Amy and Bernadette come by to help him out, on THE BIG BANG THEORY, Monday, Oct. 19 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
RECURRING CAST:
Kevin Sussman (Stuart)
John Ross Bowie (Kripke)
GUEST CAST:
Megan Heyn (Natalie)
Patrika Darbo (Grace)
Rebecca Ann Johnson (Attractive Red Head)
WRITTEN BY: Chuck Lorre, Eric Kaplan and Maria Ferrari
TELEPLAY BY: Steve Holland, Jim Reynolds and Saladin Patterson
DIRECTED BY: Mark Cendrowski
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3

SHELDON SEARCHES FOR A NEW ROOMMATE WHEN PENNY AND LEONARD ANNOUNCE THEY’RE MOVING IN TOGETHER, ON “THE BIG BANG THEORY,” MONDAY, OCT. 12
“The 2003 Approximation” – Sheldon learns of an impending change in his living arrangements and decides to revert back to 2003, a simpler time before he met Leonard and Penny. Also, Howard and Raj form a band to play at the Comic Book Store, on THE BIG BANG THEORY, Monday, Oct. 12 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
RECURRING CAST:
Kevin Sussman (Stuart)
Laura Spencer (Emily)
GUEST CAST:
Craig Welzbacher (Candidate #1)
Kurt Koehler (Candidate #2)
Arshad Aslam (Candidate #3)
WRITTEN BY: Chuck Lorre, Steve Holland and Eric Kaplan
TELEPLAY BY: Steven Molaro, Maria Ferrari and Tara Hernandez
DIRECTED BY: Mark Cendrowski
Videos: Preview Sneak Peek #1  Sneak Peek #2      

THE BOYS SURPRISE LEONARD BY TAKING HIM TO MEXICO FOR A BELATED BACHELOR PARTY, ON “THE BIG BANG THEORY,” MONDAY, OCT. 5 Keith Carradine Returns as Penny’s Father, Wyatt
“The Bachelor Party Corrosion” – The guys’ science skills are put to the test when they get a flat tire during Leonard’s bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard, on THE BIG BANG THEORY, Monday, Oct. 5 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
GUEST CAST:
Keith Carradine (Wyatt)
WRITTEN BY: Dave Goetsch, Jim Reynolds, Jeremy Howe
TELEPLAY BY: Steven Molaro, Steve Holland, Eric Kaplan
DIRECTED BY: Mark Cendrowski
Videos: Preview Sneak Peek #1 Sneak peek #2

Sheldon Gets Help from Mom in Premiere

Shamy Spoilers

Will Leonard and Penny get Married?

Season 9 Introduces Leonard's "Other Woman"

What's Next for Sheldon and Amy After the "Divorce"? 9/14

Spoilers: Steve Molaro Dishes On Penny, Leonard’s Wedding 9/11

Season 9 Spoilers: Kunal Nayyar's Raj Will Continue To Date Emily 9/5

Ask Ausiello 9/4

Leonard and Penny in the premiere 8/27

'The Big Bang Theory' Season 9 Spoilers: See Jim Parsons, Johnny Galecki In Sneak Peek [PHOTOS] 8/27

Kaley Cuoco-Sweeting Teases Leonard And Penny's Fate 8/25

Spoiler Room: Scoop on Big Bang, Murder, Supernatural and more 8/21

Diamonds aren't forever! Kaley Cuoco wears wedding band without engagement sparkler for selfie with adorable pooch Ruby 8/20

Season 9 Spoilers, Plot Rumors: Leonard's Mystery Woman Revealed, Amy to Find New Love? 8/17

CBSpoiler-palooza: Major Scoop on Good Wife, Big Bang, NCIS, Scorpion and 9 Other Returning Shows 8/10

Johnny Galecki of 'The Big Bang Theory' buys Jason Statham's Hollywood Hills compound 7/29

AFTER AMY BREAKS UP WITH SHELDON, HE TRIES TO RETALIATE USING “FUN WITH FLAGS,” ON “THE BIG BANG THEORY,” MONDAY, SEPT. 28
“The Separation Oscillation” – Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny’s mind at ease. Also, Sheldon films a special episode of “Fun with Flags” after his breakup with Amy, and Bernadette feels guilty about withholding a secret from Penny, on THE BIG BANG THEORY, Monday, Sept. 28 (8:00-8:31 PM, ET/PT), on the CBS Television Network.  Preview
GUEST CAST: Melissa Tang (Mandy)
WRITTEN BY: Steven Molaro, Steve Holland, Tara Hernandez
TELEPLAY BY: Chuck Lorre, Jim Reynolds, Maria Ferrari
DIRECTED BY: Mark Cendrowski

AFTER LEONARD CONFESSES HE KISSED ANOTHER GIRL ON THE NORTH SEA, PENNY MUST DECIDE IF SHE WANTS TO GO THROUGH WITH THE WEDDING, ON THE NINTH SEASON PREMIERE OF “THE BIG BANG THEORY,” MONDAY, SEPT. 21  Previews
Laurie Metcalf Returns as Sheldon’s Mother, Mary
“The Matrimonial Momentum” – After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn’t know how to act after Amy pushes pause on their relationship, on the ninth season premiere of THE BIG BANG THEORY, Monday, Sept. 21 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Laurie Metcalf returns as Sheldon’s mother, Mary.
RECURRING CAST:
Kevin Sussman (Stuart)
Laurie Metcalf (Mary)
GUEST CAST:
Jim Meskimen (Minister)
Louise Claps (Receptionist)
WRITTEN BY: Chuck Lorre, Jim Reynolds, Maria Ferrari
TELEPLAY BY: Steven Molaro, Steve Holland, Eric Kaplan
DIRECTED BY: Mark Cendrowski

Older Spoilers and News


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