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CBS BERNADETTE GIVES BIRTH, ON A REBROADCAST OF "THE BIG BANG THEORY," THURSDAY, AUGUST 9
"The Neonatal Nomenclature" - When Bernadette won't go into labor, all her friends try different tactics to get things started. Also, Wolowitz confronts Bernadette after Amy accidentally reveals she's already chosen their son's name, on a rebroadcast of THE BIG BANG THEORY, Thursday, August 9 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 3/1/18.)
STORY BY: Eric Kaplan & Maria Ferrari & Anthony Del Broccolo
TELEPLAY BY: Steve Holland & Tara Hernandez & Adam Faberman
DIRECTED BY: Gay Linvill Promo

CBS KOOTHRAPPALI IS CAUGHT BETWEEN A ROCK AND A HARD PLACE WHEN HE DISCOVERS HE'S DATING A MARRIED WOMAN, ON A REBROADCAST OF "THE BIG BANG THEORY," THURSDAY, JULY 26 Promo
Walton Goggins and Beth Behrs Guest Star as Husband and Wife, Oliver and Nell
"The Separation Triangulation" - Koothrappali finds himself in the middle of domestic drama when he learns the woman he's dating, Nell (Beth Behrs), has a very upset husband, Oliver (Walton Goggins). Also, when Sheldon rents his old room back for a quiet place to work, he drives Leonard crazy by being a model tenant, on a rebroadcast of THE BIG BANG THEORY, Thursday, July 26 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 1/18/18.)
STORY BY: Chuck Lorre & Eric Kaplan & Maria Ferrari
TELEPLAY BY: Steven Molaro & Steve Holland & Tara Hernandez
DIRECTED BY: Mark Cendrowski

PENNY HELPS SHELDON FIGURE OUT HIS NEXT MOVE IN SCIENCE, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JULY 19 Promo
Laurie Metcalf Returns as Sheldon’s Mother, Mary
“The Solo Oscillation” – When Sheldon kicks Amy out to work solo, she and Leonard bond during a series of science experiments. Also, Bert the geologist replaces Wolowitz in the band Footprints on the Moon, and Sheldon finds Penny a surprising source of scientific inspiration, on a rebroadcast of THE BIG BANG THEORY, Thursday, July 19 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Laurie Metcalf returns as Sheldon’s mother, Mary. (Originally broadcast 1/11/18.)
RECURRING CAST: Laurie Metcalf (Mary)
Brian Posehn (Bert)
Pamela Adlon (Halley, O.S)
STORY BY: Chuck Lorre & Steve Holland & Anthony Del Broccolo
TELEPLAY BY: Eric Kaplan & Maria Ferrari & Jeremy Howe
DIRECTED BY: Mark Cendrowski

SHELDON PLANS AN AUTHENTIC “LITTLE HOUSE ON THE PRAIRIE” DINNER FOR AMY’S BIRTHDAY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JULY 12
“The Celebration Reverberation” – Sheldon and Wolowitz plan birthday celebrations for Amy and Halley, respectively. Also, Leonard receives a Christmas letter from his brother that causes him to spiral out about his own lack of accomplishments, on a rebroadcast of THE BIG BANG THEORY, Thursday, July 12 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 12/14/17.)
RECURRING CAST: Kevin Sussman (Stuart)
Pamela Adlon (Halley, O.S)
STORY BY: Steve Holland, Eric Kaplan, Alex Ayers
TELEPLAY BY: Dave Goetsch, Maria Ferrari, Jeremy Howe
DIRECTED BY: Mark Cendrowski

THE GANG FLASHES BACK TO 2010 AS LEONARD TRIES TO REMEMBER WHERE HE KEPT A POTENTIALLY VALUABLE INVESTMENT, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JULY 5 Promo
“The Bitcoin Entanglement” – Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable Bitcoin investment. Also, a seven-year-old video reveals a secret about Leonard and Penny’s relationship, on a rebroadcast of THE BIG BANG THEORY, Thursday, July 5 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 11/30/17.)
RECURRING CAST: Kevin Sussman (Stuart)
Brian Thomas Smith (Zack)
STORY BY: Steve Holland, Andy Gordon, Jeremy Howe
TELEPLAY BY: Dave Goetsch, Maria Ferrari, Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski

PENNY MAKES A SCIENTIFIC DISCOVERY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JUNE 28 Promo
Bestselling Author Neil Gaiman Guest Stars as Himself
“The Comet Polarization” – Sheldon’s comic book store experiences changes when writer Neil Gaiman puts Stuart’s store on the map. Also, Koothrappali takes credit for Penny’s astronomical discovery, and friendships are threatened, on a rebroadcast of THE BIG BANG THEORY, Thursday, June 28 (8:31-9:00 PM, ET/PT) on the CBS Television Network. (Originally broadcast 4/19/18.)
GUEST CAST: Neil Gaiman (Himself)
Lauren Lapkus (Denise)
Patrick Daniel (Grant)
STORY BY: Steve Holland & Bill Prady & Eric Kaplan
TELEPLAY BY: Maria Ferrari & Andy Gordon & Tara Hernandez
DIRECTED BY: Mark Cendrowski

IT’S BACHELOR AND BACHELORETTE PARTY NIGHT FOR SHELDON AND AMY, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JUNE 28 Promo
Peter MacNicol Guest Stars as Doctor Wolcott, a Brilliant Scientist
“The Reclusive Potential” – A brilliant but reclusive scientist, Doctor Wolcott (Peter MacNicol), invites Sheldon to his cabin in the middle of nowhere, and Leonard, Raj and Howard go along for the trip. Also, Penny and Bernadette improvise after Amy doesn’t like the tame bachelorette party they planned for her, on a rebroadcast of THE BIG BANG THEORY, Thursday, June 28 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 4/12/18.)
GUEST CAST: Peter MacNicol (Doctor Wolcott)
James Maslow (Bartender)
Edward James Gage (Mailman)
STORY BY: Maria Ferrari & Anthony Del Broccolo & Tara Hernandez
TELEPLAY BY: Steve Holland & Eric Kaplan & Adam Faberman
DIRECTED BY: Mark Cendrowski

CBS LEONARD AND WOLOWITZ GO TO BARRY KRIPKE FOR HELP AFTER SHELDON BETRAYS THEM, ON A REBROADCAST OF "THE BIG BANG THEORY," THURSDAY, JUNE 21
Dean Norris Returns as Colonel Williams Promo
"The Tesla Recoil" - Leonard and Wolowitz are furious after they learn Sheldon went to work with the military behind their backs. Also, while Bernadette is on bed rest, she asks Raj to do some digging when she suspects Ruchi is trying to steal her job, on a rebroadcast of THE BIG BANG THEORY, Thursday, June 21 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 11/16/17.)
STORY BY: Chuck Lorre, Eric Kaplan, Tara Hernandez
TELEPLAY BY: Steve Holland, Maria Ferrari, Jeremy Howe
DIRECTED BY: Anthony Rich

SHELDON TRIES TO KEEP HIS GEOLOGY COLLABORATION WITH BERT A SECRET, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, JUNE 14
“The Geology Methodology” – Sheldon and Bert collaborate on a research project, despite Sheldon’s embarrassment. Also, Penny and Bernadette coach Koothrappali on how to navigate his relationship with Ruchi (Swati Kapila), on a rebroadcast of THE BIG BANG THEORY, Thursday, June 14 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 11/9/17.)
RECURRING CAST: Kevin Sussman (Stuart) Promo
Brian Posehn (Bert)
Swati Kapila (Ruchi)
GUEST CAST: Elka Rodriguez (Rose Lady)
STORY BY: Steve Holland, Anthony Del Broccolo, Adam Faberman
TELEPLAY BY: Eric Kaplan, Maria Ferrari, Tara Hernandez
DIRECTED BY: Mark Cendrowski

PHILANTHROPIST BILL GATES MAKES AN APPEARANCE, ON A REBROADCAST OF "THE BIG BANG THEORY," THURSDAY, MAY 24
"The Gates Excitation" - Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company. Also, Leonard, Koothrappali and Wolowitz do everything in their power to meet him, while Sheldon thinks he is the victim of an April Fools prank, on a rebroadcast of THE BIG BANG THEORY, Thursday, May 24 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 3/29/18.)
STORY BY: Eric Kaplan & Maria Ferrari & Andy Gordon
TELEPLAY BY: Steve Holland & Tara Hernadnez & Jeremy Howe
DIRECTED BY: Mark Cendrowski Promo

CBS BERNADETTE GIVES BIRTH, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, MAY 21
"The Neonatal Nomenclature" - When Bernadette won't go into labor, all her friends try different tactics to get things started. Also, Wolowitz confronts Bernadette after Amy accidentally reveals she's already chosen their son's name, on a rebroadcast of THE BIG BANG THEORY, Monday, May 21 (8:00-8:30 PM, ET/PT), on the CBS Television Network. (Originally broadcast 3/1/18.)
STORY BY: Eric Kaplan & Maria Ferrari & Anthony Del Broccolo
TELEPLAY BY: Steve Holland & Tara Hernandez & Adam Faberman
DIRECTED BY: Gay Linvill Promo

CBS SHELDON AND AMY'S WEDDING PLANS HIT A SNAG IN THE FORM OF BARRY KRIPKE, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, MAY 21
John Ross Bowie Returns as Kripke
"The Athenaeum Allocation" - Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy. Also, Bernadette and Wolowitz have a hard time deciding who should stay at home with the kids and who should go back to work, on a rebroadcast of THE BIG BANG THEORY, Monday, May 21 (9:00-9:30 PM, ET/PT) on the CBS Television Network. John Ross Bowie returns as Kripke. (Originally broadcast 3/8/18.)
STORY BY: Steve Holland & Steven Molaro & Tara Hernandez
TELEPLAY BY: Dave Goetsch & Eric Kaplan & Maria Ferrari
DIRECTED BY: Mark Cendrowski Promo

SHELDON AND AMY’S FAMILIES ARRIVE FOR THE WEDDING, ON THE 11th SEASON FINALE OF “THE BIG BANG THEORY,” THURSDAY, MAY 10 Promo
Guest Stars Include Academy Award Winner Kathy Bates, Legendary Actor Mark Hamill, and Writer and Producer Teller
John Ross Bowie, Courtney Henggeler, Lauren Lapkus, Laurie Metcalf, Jerry O’Connell, Brian Posehn and Wil Wheaton Return
“The Bow Tie Asymmetry” – When Amy’s parents and Sheldon’s family arrive for the wedding, everybody is focused on making sure all goes according to plan – everyone except the bride and groom, on the 11th season finale of THE BIG BANG THEORY, Thursday, May 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
Laurie Metcalf (Mary)
John Ross Bowie (Kripke)
Wil Wheaton (Himself)
Brian Posehn (Bert)
Jerry O’Connell (George)
Courtney Henggeler (Missy)
Lauren Lapkus (Denise)
GUEST CAST: Teller (Mr. Fowler)
Kathy Bates (Mrs. Fowler)
Mark Hamill (Himself)
STORY BY: Chuck Lorre & Steven Molaro & Maria Ferrari
TELEPLAY BY: Steve Holland & Eric Kaplan & Tara Hernandez
DIRECTED BY: Marc Cendrowski

LEONARD FINDS HIMSELF IN AN AWKWARD SPOT AFTER HE ASKS HIS FRIENDS FOR FEEDBACK ON HIS NOVEL, ON A REBROADCAST OF "THE BIG BANG THEORY," THURSDAY, MAY 17
Christine Baranski and Wil Wheaton Return to Guest Star
"The Novelization Correlation" - When Sheldon petitions Wil Wheaton to appear on the new Professor Proton show, Wil offers a role to Amy instead. Also, Penny gets angry when she thinks the female protagonist in Leonard's novel is based on her, on a rebroadcast of THE BIG BANG THEORY, Thursday, May 17 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Christine Baranski and Wil Wheaton return to guest star. (Originally broadcast 2/1/18.)
STORY BY: Steve Holland & Andy Gordon & Adam Faberman
TELEPLAY BY: Eric Kaplan & Maria Ferrari & Jeremy Howe
DIRECTED BY: Mark Cendrowski Promo

LEONARD FINDS HIMSELF IN AN AWKWARD SPOT AFTER HE ASKS HIS FRIENDS FOR FEEDBACK ON HIS NOVEL, ON A REBROADCAST OF “THE BIG BANG THEORY,” THURSDAY, MAY 17
Christine Baranski and Wil Wheaton Return to Guest Star
“The Novelization Correlation” – When Sheldon petitions Wil Wheaton to appear on the new Professor Proton show, Wil offers a role to Amy instead. Also, Penny gets angry when she thinks the female protagonist in Leonard’s novel is based on her, on a rebroadcast of THE BIG BANG THEORY, Thursday, May 17 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Christine Baranski and Wil Wheaton return to guest star. (Originally broadcast 2/1/18.)
RECURRING CAST: Kevin Sussman (Stuart)
Christine Baranski (Beverly)
Wil Wheaton (Himself)
STORY BY: Steve Holland & Andy Gordon & Adam Faberman
TELEPLAY BY: Eric Kaplan & Maria Ferrari & Jeremy Howe
DIRECTED BY: Mark Cendrowski

THURSDAY, MAY 10 THE BIG BANG THEORY (8:00-8:31PM) - GUEST STARS GALORE!
“The Bow Tie Asymmetry” – When Amy’s (Mayim Bialik) parents and Sheldon’s (Jim Parsons) family arrive, everybody is focused to make sure all wedding arrangements go according to plan – everyone except the bride and groom. Kathy Bates, John Ross Bowie, Mark Hamill, Courtney Henggeler, Lauren Lapkus, Laurie Metcalf, Jerry O’Connell, Brian Posehn, Teller, and Wil Wheaton guest star. 11th season finale.

SHELDON AND AMY’S FAMILIES ARRIVE FOR THE WEDDING, ON THE 11th SEASON FINALE OF “THE BIG BANG THEORY,” THURSDAY, MAY 10
Guest Stars Include Academy Award Winner Kathy Bates, Legendary Actor Mark Hamill, and Writer and Producer Teller, John Ross Bowie, Courtney Henggeler, Lauren Lapkus, Laurie Metcalf, Jerry O’Connell, Brian Posehn and Wil Wheaton Return
“The Bow Tie Asymmetry” – When Amy’s parents and Sheldon’s family arrive for the wedding, everybody is focused on making sure all goes according to plan – everyone except the bride and groom, on the 11th season finale of THE BIG BANG THEORY, Thursday, May 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
Laurie Metcalf (Mary)
John Ross Bowie (Kripke)
Wil Wheaton (Himself)
Brian Posehn (Bert)
Jerry O’Connell (George)
Courtney Henggeler (Missy)
Lauren Lapkus (Denise)
GUEST CAST: Teller (Mr. Fowler)
Kathy Bates (Mrs. Fowler)
Mark Hamill (Himself)
STORY BY: Chuck Lorre & Steven Molaro & Maria Ferrari
TELEPLAY BY: Steve Holland & Eric Kaplan & Tara Hernandez
DIRECTED BY: Marc Cendrowski

SHELDON AND AMY TRY TO USE SCIENCE TO DECIDE WHO WILL BE THEIR MAID OF HONOR AND BEST MAN, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MAY 7 Promo
“The Matrimonial Metric” – To discover who would be most qualified to be best man and maid of honor at their wedding, Sheldon and Amy subject their friends to a series of secret experiments. Also, Penny reveals her true feelings about Amy, on a rebroadcast of THE BIG BANG THEORY, Monday, May 7 (9:30-10:00 PM, ET/PT) on the CBS Television Network. (Originally broadcast 1/4/18.)
RECURRING CAST: Kevin Sussman (Stuart)
STORY BY: Maria Ferrari & Tara Hernandez & Jeremy Howe
TELEPLAY BY: Steve Holland & Eric Kaplan & Andy Gordon
DIRECTED BY: Mark Cendrowski

PENNY HELPS SHELDON FIGURE OUT HIS NEXT MOVE IN SCIENCE, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MAY 14
Laurie Metcalf Returns as Sheldon’s Mother, Mary
“The Solo Oscillation” – When Sheldon kicks Amy out to work solo, she and Leonard bond during a series of science experiments. Also, Bert the geologist replaces Wolowitz in the band Footprints on the Moon, and Sheldon finds Penny a surprising source of scientific inspiration, on a rebroadcast of THE BIG BANG THEORY, Monday, May 14 (8:00-8:30 PM, ET/PT) on the CBS Television Network. Laurie Metcalf returns as Sheldon’s mother, Mary. (Originally broadcast 1/11/18.)
RECURRING CAST: Laurie Metcalf (Mary)
Brian Posehn (Bert)
Pamela Adlon (Halley, O.S)
STORY BY: Chuck Lorre & Steve Holland & Anthony Del Broccolo
TELEPLAY BY: Eric Kaplan & Maria Ferrari & Jeremy Howe
DIRECTED BY: Mark Cendrowski

KOOTHRAPPALI IS CAUGHT BETWEEN A ROCK AND A HARD PLACE WHEN HE DISCOVERS HE’S DATING A MARRIED WOMAN, ON A REBROADCAST OF “THE BIG BANG THEORY,” MONDAY, MAY 14
Walton Goggins and Beth Behrs Guest Star as Husband and Wife, Oliver and Nell
“The Separation Triangulation” – Koothrappali finds himself in the middle of domestic drama when he learns the woman he’s dating, Nell (Beth Behrs), has a very upset husband, Oliver (Walton Goggins). Also, when Sheldon rents his old room back for a quiet place to work, he drives Leonard crazy by being a model tenant, on a rebroadcast of THE BIG BANG THEORY, Monday, May 14 (9:30-10:00 PM, ET/PT) on the CBS Television Network. (Originally broadcast 1/18/18.)
GUEST CAST: Walton Goggins (Oliver)
Beth Behrs (Nell)
STORY BY: Chuck Lorre & Eric Kaplan & Maria Ferrari
TELEPLAY BY: Steven Molaro & Steve Holland & Tara Hernandez
DIRECTED BY: Mark Cendrowski

CBS WOLOWITZ AND SHELDON BOND OVER THEIR RELATIONSHIPS WITH THEIR DISAPPOINTING FATHERS, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, APRIL 23 Promo
Christine Baranski Returns as Leonard's Mother, Beverly
"The Explosion Implosion" - Wolowitz and Sheldon bond when they drive to the desert to shoot off a model rocket. Also, when Leonard's mom, Beverly (Christine Baranski), finds a new best friend in Penny, it rubs Leonard the wrong way, on a rebroadcast of THE BIG BANG THEORY, Monday, April 23 (9:30-10:00 PM, ET/PT) on the CBS Television Network. (Originally broadcast 10/16/17.)
STORY BY: Bill Prady, Maria Ferrari, Tara Hernandez
TELEPLAY BY: Steve Holland, Eric Kaplan, Jeremy Howe
DIRECTED BY: Mark Cendrowski

CBS AMY RECORDS SHELDON TALKING IN HIS SLEEP AND TRIES TO CONVINCE HIM HE CAN BE MORE EASYGOING, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, APRIL 23 Promo
"The Relaxation Integration" - As Sheldon stresses about picking a wedding date, Amy tries to convince him he has a more laid-back side. Also, Koothrappali and Stuart compete to win the heart of Bernadette's new coworker, Ruchi (Swati Kapila), on a rebroadcast of Monday, April 23 (8:00-8:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 10/9/17.)
STORY BY: Chuck Lorre, Steve Holland, Adam Faberman
TELEPLAY BY: Maria Ferrari, Andy Gordon, Tara Hernandez
DIRECTED BY: Mark Cendrowski

SHELDON DOES EVERYTHING HE CAN TO RAISE $300 MILLION, ON “THE BIG BANG THEORY,” THURSDAY, APRIL 26  Preview
“The Monetary Insufficiency” – Sheldon goes to Vegas to win money for science. Also, Penny and Bernadette take Amy wedding dress shopping, but her terrible choice entangles them in a web of lies, on THE BIG BANG THEORY, Thursday, April 26 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
GUEST CAST: Joshua Malina (President Siebert)
Mark Berry (Pit Boss)
Evan Charest (Croupier)
D’Kia Anderson (Hostess)
Seth Coltan (Earl)
STORY BY: Dave Goetsch & Maria Ferrari & Tara Hernandez
TELEPLAY BY: Steve Holland & Eric Kaplan & Jeremy Howe
DIRECTED BY: Nikki Lorre

PENNY MAKES A SCIENTIFIC DISCOVERY, ON “THE BIG BANG THEORY,” THURSDAY, APRIL 19
Bestselling Author Neil Gaiman Guest Stars as Himself Preview 
“The Comet Polarization” – Sheldon’s comic book store experiences changes when writer Neil Gaiman puts Stuart’s store on the map. Also, Koothrappali takes credit for Penny’s astronomical discovery, and friendships are threatened, on THE BIG BANG THEORY, Thursday, April 19 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
GUEST CAST: Neil Gaiman (Himself)
Lauren Lapkus (Denise)
Patrick Daniel (Grant)
STORY BY: Steve Holland & Bill Prady & Eric Kaplan
TELEPLAY BY: Maria Ferrari & Andy Gordon & Tara Hernandez
DIRECTED BY: Mark Cendrowski

CBS IT'S BACHELOR AND BACHELORETTE PARTY NIGHT FOR SHELDON AND AMY, ON "THE BIG BANG THEORY," THURSDAY, APRIL 12 Preview
Peter MacNicol Guest Stars as Doctor Wolcott, a Brilliant Scientist
"The Reclusive Potential" - A brilliant but reclusive scientist, Doctor Wolcott (Peter MacNicol), invites Sheldon to his cabin in the middle of nowhere, and Leonard, Raj and Howard go along for the trip. Also, Penny and Bernadette improvise after Amy doesn't like the tame bachelorette party they planned for her, on THE BIG BANG THEORY, Thursday, April 12 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
STORY BY: Maria Ferrari & Anthony Del Broccolo & Tara Hernandez
TELEPLAY BY: Steve Holland & Eric Kaplan & Adam Faberman
DIRECTED BY: Mark Cendrowski

PHILANTHROPIST BILL GATES MAKES AN APPEARANCE, ON "THE BIG BANG THEORY," THURSDAY, MARCH 29
"The Gates Excitation" - Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company. Also, Leonard, Koothrappali and Wolowitz do everything in their power to meet him, while Sheldon thinks he is the victim of an April Fools prank, on THE BIG BANG THEORY, Thursday, March 29 (8:00-8:31 PM, ET/PT), on the CBS Television Network.
STORY BY: Eric Kaplan & Maria Ferrari & Andy Gordon
TELEPLAY BY: Steve Holland & Tara Hernadnez & Jeremy Howe
DIRECTED BY: Mark Cendrowski Promo

CBS LEONARD AND WOLOWITZ GO TO BARRY KRIPKE FOR HELP AFTER SHELDON BETRAYS THEM, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, MARCH 12
Dean Norris Returns as Colonel Williams Promo
"The Tesla Recoil" - Leonard and Wolowitz are furious after they learn Sheldon went to work with the military behind their backs. Also, while Bernadette is on bed rest, she asks Raj to do some digging when she suspects Ruchi is trying to steal her job, on a rebroadcast of THE BIG BANG THEORY, Monday, March 12 (8:00-8:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 11/16/17.)
STORY BY: Chuck Lorre, Eric Kaplan, Tara Hernandez
TELEPLAY BY: Steve Holland, Maria Ferrari, Jeremy Howe
DIRECTED BY: Anthony Rich

SHELDON AND AMY'S WEDDING PLANS HIT A SNAG IN THE FORM OF BARRY KRIPKE, ON "THE BIG BANG THEORY," THURSDAY, MARCH 8 Preview
John Ross Bowie Returns as Kripke
"The Athenaeum Allocation" - Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy. Also, Bernadette and Wolowitz have a hard time deciding who should stay at home with the kids and who should go back to work, on THE BIG BANG THEORY, Thursday, March 8 (8:00-8:31 PM, ET/PT) on the CBS Television Network. John Ross Bowie returns as Kripke.
RECURRING CAST: John Ross Bowie (Kripke)
GUEST CAST: Rachna Khatau (Kathleen)
Caleb Pierce (Jess)
STORY BY: Steve Holland & Steven Molaro & Tara Hernandez
TELEPLAY BY: Dave Goetsch & Eric Kaplan & Maria Ferrari
DIRECTED BY: Mark Cendrowski

CBS LEONARD'S JOB IS AT STAKE AFTER HE GIVES AN EMBARRASSING RADIO INTERVIEW, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, FEB. 19
NPR Host Ira Flatow Returns as Himself and Regina King Returns as Mrs. Davis
"The Retraction Reaction" - Leonard angers the university - and the entire physics community - after he gives an embarrassing interview. Also, Amy and Bernadette bond over having to hide their success from Sheldon and Howard, on a rebroadcast of THE BIG BANG THEORY, Monday, Feb. 19 (9:00-9:30 PM, ET/PT) on the CBS Television Network. Ira Flatow returns to guest star as himself, and Regina King returns as Mrs. Davis. (Originally broadcast 11/9/17.)
STORY BY: Steven Molaro, Steve Holland, Maria Ferrari
TELEPLAY BY: Dave Goetsch, Eric Kaplan, Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski

CBS WHAT DID SHE SAY? FIND OUT AMY'S ANSWER TO SHELDON'S MARRIAGE PROPOSAL ON A REBROADCAST OF THE 11th SEASON PREMIERE OF "THE BIG BANG THEORY," THURSDAY, FEB. 15
Laurie Metcalf Returns as Sheldon's Mother, Mary, Riki Lindhome Returns as Ramona, and Stephen Hawking Returns to Guest Star as Himself
"The Proposal Proposal" - Amy gives Sheldon an answer to his proposal while Howard and Bernadette struggle with some unexpected news, on a rebroadcast of the 11th season premiere of THE BIG BANG THEORY, Thursday, Feb. 15 (9:00-9:30 PM, ET/PT) on the CBS Television Network. Laurie Metcalf returns as Sheldon's mother, Mary; Riki Lindhome returns as Ramona; and Stephen Hawking returns as himself. (Originally broadcast 9/25/17.)
STORY BY: Chuck Lorre, Eric Kaplan, Jeremy Howe Sneak Peek
TELEPLAY BY: Steve Holland, Maria Ferrari, Tara Hernandez
DIRECTED BY: Mark Cendrowski

CBS PENNY FIGURES OUT THE 'SECRET' TO SHELDON, ON A REBROADCAST OF "THE BIG BANG THEORY," THURSDAY, FEB. 15
"The Collaboration Contamination" - Sheldon and Koothrappali confide in Bernadette when they can't handle Amy and Wolowitz working together. Also, Penny and Leonard learn new tactics for how to deal Sheldon from an unlikely source, on a rebroadcast of THE BIG BANG THEORY, Thursday, Feb. 15 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Originally broadcast 10/23/17.)
STORY BY: Steven Molaro, Steve Holland, Eric Kaplan Promo
TELEPLAY BY: Dave Goetsch, Maria Ferrari, Jeremy Howe
DIRECTED BY: Nikki Lorre

CBS LEONARD FINDS HIMSELF IN AN AWKWARD SPOT AFTER HE ASKS HIS FRIENDS FOR FEEDBACK ON HIS NOVEL, ON "THE BIG BANG THEORY," THURSDAY, FEB. 1
Christine Baranski and Wil Wheaton Return to Guest Star
"The Novelization Correlation" - When Sheldon petitions Wil Wheaton to appear on the new Professor Proton show, Wil offers a role to Amy instead. Also, Penny gets angry when she thinks the female protagonist in Leonard's novel is based on her, on THE BIG BANG THEORY, Thursday, Feb. 1 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Christine Baranski and Wil Wheaton return to guest star. Preview
STORY BY: Steve Holland & Andy Gordon & Adam Faberman
TELEPLAY BY: Eric Kaplan & Maria Ferrari & Jeremy Howe
DIRECTED BY: Mark Cendrowski

LEONARD'S JOB IS AT STAKE AFTER HE GIVES AN EMBARRASSING RADIO INTERVIEW, ON A REBROADCAST OF "THE BIG BANG THEORY," THURSDAY, JAN. 25
NPR Host Ira Flatow Returns as Himself, and Regina King Returns as Mrs. Davis Promo
"The Retraction Reaction" - Leonard angers the university - and the entire physics community - after he gives an embarrassing interview. Also, Amy and Bernadette bond over having to hide their success from Sheldon and Howard, on a rebroadcast of THE BIG BANG THEORY, Thursday, Jan. 25 (9:00-9:31 PM, ET/PT) on the CBS Television Network. Ira Flatow returns to guest star as himself, and Regina King returns as Mrs. Davis. (Originally broadcast 10/2/17.)
STORY BY: Steven Molaro, Steve Holland, Maria Ferrari
TELEPLAY BY: Dave Goetsch, Eric Kaplan, Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski

KOOTHRAPPALI IS CAUGHT BETWEEN A ROCK AND A HARD PLACE WHEN HE DISCOVERS HE'S DATING A MARRIED WOMAN, ON "THE BIG BANG THEORY," THURSDAY, JAN. 18
Walter Goggins and Beth Behrs Guest Star as Husband and Wife, Oliver and Nell
"The Separation Triangulation" - Koothrappali finds himself in the middle of domestic drama when he learns the woman he's dating, Nell (Beth Behrs), has a very upset husband, Oliver (Walter Goggins). Also, when Sheldon rents his old room back for a quiet place to work, he drives Leonard crazy by being a model tenant, on THE BIG BANG THEORY, Thursday, Jan. 18 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
GUEST CAST: Walton Goggins (Oliver)
Beth Behrs (Nell)
STORY BY: Chuck Lorre & Eric Kaplan & Maria Ferrari
TELEPLAY BY: Steven Molaro & Steve Holland & Tara Hernandez
DIRECTED BY: Mark Cendrowski

PENNY HELPS SHELDON FIGURE OUT HIS NEXT MOVE IN SCIENCE, ON "THE BIG BANG THEORY," THURSDAY, JAN. 11
Laurie Metcalf Returns as Sheldon's Mother, Mary Preview
"The Solo Oscillation" - When Sheldon kicks Amy out to work solo, she and Leonard bond during a series of science experiments. Also, Bert the geologist replaces Wolowitz in the band Footprints on the Moon, and Sheldon finds Penny a surprising source of scientific inspiration, on THE BIG BANG THEORY, Thursday, Jan. 11 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Laurie Metcalf returns as Sheldon's mother, Mary.
STORY BY: Chuck Lorre & Steve Holland & Anthony Del Broccolo
TELEPLAY BY: Eric Kaplan & Maria Ferrari & Jeremy Howe
DIRECTED BY: Mark Cendrowski

CBS SHELDON AND AMY TRY TO USE SCIENCE TO DECIDE WHO WILL BE THEIR MAID OF HONOR AND BEST MAN, ON "THE BIG BANG THEORY," THURSDAY, JAN. 4 Preview
"The Matrimonial Metric" - To discover who would be most qualified to be best man and maid of honor at their wedding, Sheldon and Amy subject their friends to a series of secret experiments. Also, Penny reveals her true feelings about Amy, on THE BIG BANG THEORY, Thursday, Jan. 4 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
STORY BY: Maria Ferrari & Tara Hernandez & Jeremy Howe
TELEPLAY BY: Steve Holland & Eric Kaplan & Andy Gordon
DIRECTED BY: Mark Cendrowski

CBS AFTER LEONARD, SHELDON AND WOLOWITZ CELEBRATE THE COMPLETION OF THE TOP SECRET AIR FORCE PROJECT, THEY ARE MET WITH AN UNPLEASANT SURPRISE, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, JAN. 1 Promo
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 a rebroadcast of THE BIG BANG THEORY, Monday, Jan. 1 (8:00-8:30 PM, ET/PT) on the CBS Television Network. (Originally broadcast 5/4/17.)
STORY BY: Chuck Lorre, Steve Holland, Alex Ayers
TELEPLAY BY: Steven Molaro, Jim Reynolds, Saladin K. Patterson
DIRECTED BY: Anthony Rich

THE GANG FLASHES BACK TO 2010 AS LEONARD TRIES TO REMEMBER WHERE HE KEPT A POTENTIALLY VALUABLE INVESTMENT, ON “THE BIG BANG THEORY,” THURSDAY, NOV. 30
“The Bitcoin Entanglement” – Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable Bitcoin investment. Also, a seven-year-old video reveals a secret about Leonard and Penny’s relationship, on THE BIG BANG THEORY, Thursday, Nov. 30 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
Brian Thomas Smith (Zack)
STORY BY: Steve Holland, Andy Gordon, Jeremy Howe
TELEPLAY BY: Dave Goetsch, Maria Ferrari, Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski

SHELDON AND AMY DEVELOP A UNIQUE SYSTEM FOR WEDDING PLANNING, ON “THE BIG BANG THEORY,” THURSDAY, DEC. 7 Preview
“The Confidence Erosion” – Sheldon and Amy try to eliminate stress from wedding planning by applying math to the process. Also, Koothrappali “breaks up” with Wolowitz after realizing his best friend is actually hurting his confidence, on THE BIG BANG THEORY, Thursday, Dec. 7 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
Brian George (Dr. Koothrappali)
STORY BY: Bill Prady, Maria Ferrari, Adam Faberman
TELEPLAY BY: Steve Holland, Eric Kaplan, Tara Hernandez
DIRECTED BY: Mark Cendrowski

SHELDON PLANS AN AUTHENTIC “LITTLE HOUSE ON THE PRAIRIE” DINNER FOR AMY’S BIRTHDAY, ON “THE BIG BANG THEORY,” THURSDAY, DEC. 14
“The Celebration Reverberation” – Sheldon and Wolowitz plan birthday celebrations for Amy and Halley, respectively. Also, Leonard receives a Christmas letter from his brother that causes him to spiral out about his own lack of accomplishments, on THE BIG BANG THEORY, Thursday, Dec. 14 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
STORY BY: Steve Holland, Eric Kaplan, Alex Ayers
TELEPLAY BY: Dave Goetsch, Maria Ferrari, Jeremy Howe
DIRECTED BY: Mark Cendrowski

CBS HOWARD AND BERNADETTE WELCOME THEIR NEW BABY, ON A REBROADCAST OF "THE BIG BANG THEORY," MONDAY, NOV. 6
"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, Monday, Nov. 6 (8:30-9:00 PM, ET/PT) on the CBS Television Network. (Originally broadcast 12/15/16.)
STORY BY: Chuck Lorre, Steve Holland, Maria Ferrari
TELEPLAY BY: Steve Molaro, Eric Kaplan, Tara Hernandez
DIRECTED BY: Nikki Lorre

CBS SHELDON TRIES TO KEEP HIS GEOLOGY COLLABORATION WITH BERT A SECRET, ON “THE BIG BANG THEORY,” THURSDAY, NOV. 9 Promo
“The Geology Methodology” – Sheldon and Bert collaborate on a research project, despite Sheldon’s embarrassment. Also, Penny and Bernadette coach Koothrappali on how to navigate his relationship with Ruchi (Swati Kapila), on THE BIG BANG THEORY, Thursday, Nov. 9 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
Brian Posehn (Bert)
Swati Kapila (Ruchi)
GUEST CAST: Elka Rodriguez (Rose Lady)
STORY BY: Steve Holland, Anthony Del Broccolo, Adam Faberman
TELEPLAY BY: Eric Kaplan, Maria Ferrari, Tara Hernandez
DIRECTED BY: Mark Cendrowski

CBS SHELDON AUDITIONS TO BE THE NEW PROFESSOR PROTON, WHEN "THE BIG BANG THEORY" MOVES TO ITS REGULAR TIME PERIOD, THURSDAY, NOV. 2
Emmy Award Winner Bob Newhart and Wil Wheaton Return to Guest Star Promo
"The Proton Regeneration" - Sheldon goes head-to-head with Wil Wheaton for the role of the new Professor Proton. Also, Penny steps in to take care of Halley when Bernadette and Wolowitz both wind up on bed rest, when THE BIG BANG THEORY moves to its regular time period, Thursday, Nov. 2 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Bob Newhart (Arthur Jeffries)
Wil Wheaton (Himself)
Pamela Adlon (Halley, O.S)
GUEST CAST: Cat Hammons (Nurse)
STORY BY: Steven Molaro, Dave Goetsch, Alex Yonks
TELEPLAY BY: Steve Holland, Andy Gordon, Jeremy Howe
DIRECTED BY: Mark Cendrowski

PENNY FIGURES OUT THE ‘SECRET’ TO SHELDON, ON “THE BIG BANG THEORY,” MONDAY, OCT. 23
“The Collaboration Contamination” – Sheldon and Koothrappali confide in Bernadette when they can’t handle Amy and Wolowitz working together. Also, Penny and Leonard learn new tactics for how to deal Sheldon from an unlikely source, on THE BIG BANG THEORY, Monday, Oct. 23 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
GUEST CAST: Efrain Gomez (Employee)
STORY BY: Steven Molaro, Steve Holland, Eric Kaplan
TELEPLAY BY: Dave Goetsch, Maria Ferrari, Jeremy Howe
DIRECTED BY: Nikki Lorre
Video Clips: Preview Sneak Peek #1 Sneak Peek #2 Sneak Peek #3  Sneak Peek #4 

CBS WOLOWITZ AND SHELDON BOND OVER THEIR RELATIONSHIPS WITH THEIR DISAPPOINTING FATHERS, ON "THE BIG BANG THEORY," MONDAY, OCT. 16 Sneak Peak/Preview
Christine Baranski Returns as Leonard's Mother, Beverly
"The Explosion Implosion" - Wolowitz and Sheldon bond when they drive to the desert to shoot off a model rocket. Also, when Leonard's mom, Beverly (Christine Baranski), finds a new best friend in Penny, it rubs Leonard the wrong way, on THE BIG BANG THEORY, Monday, Oct. 16 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
STORY BY: Bill Prady, Maria Ferrari, Tara Hernandez
TELEPLAY BY: Steve Holland, Eric Kaplan, Jeremy Howe
DIRECTED BY: Mark Cendrowski

AMY RECORDS SHELDON TALKING IN HIS SLEEP AND TRIES TO CONVINCE HIM HE CAN BE MORE EASYGOING, ON "THE BIG BANG THEORY," MONDAY, OCT. 9
"The Relaxation Integration" - As Sheldon stresses about picking a wedding date, Amy tries to convince him he has a more laid-back side. Also, Koothrappali and Stuart compete to win the heart of Bernadette's new coworker, Ruchi (Swati Kapila), on Monday, Oct. 9 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
STORY BY: Chuck Lorre, Steve Holland, Adam Faberman
TELEPLAY BY: Maria Ferrari, Andy Gordon, Tara Hernandez
DIRECTED BY: Mark Cendrowski Promo

LEONARD’S JOB IS AT STAKE AFTER HE GIVES AN EMBARRASSING RADIO INTERVIEW, ON “THE BIG BANG THEORY,” MONDAY, OCT. 2
Editor’s note: The air time of this episode has changed.
NPR Host Ira Flatow Returns as Himself and Regina King Returns as Mrs. Davis
“The Retraction Reaction” – Leonard angers the university – and the entire physics community – after he gives an embarrassing interview. Also, Amy and Bernadette bond over having to hide their success from Sheldon and Howard, Monday, Oct. 2 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Ira Flatow returns to guest star as himself, and Regina King returns as Mrs. Davis.
RECURRING CAST: Regina King (Janine Davis)
Ira Flatow (Himself)
STORY BY: Steven Molaro, Steve Holland, Maria Ferrari
TELEPLAY BY: Dave Goetsch, Eric Kaplan, Anthony Del Broccolo
DIRECTED BY: Mark Cendrowski

AMY RECORDS SHELDON TALKING IN HIS SLEEP AND TRIES TO CONVINCE HIM HE CAN BE MORE EASYGOING, ON “THE BIG BANG THEORY,” MONDAY, OCT. 9
“The Relaxation Integration” – As Sheldon stresses about picking a wedding date, Amy tries to convince him he has a more laid-back side. Also, Koothrappali and Stuart compete to win the heart of Bernadette’s new coworker, Ruchi (Swati Kapila), on Monday, Oct. 9 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Kevin Sussman (Stuart)
GUEST CAST: Swati Kapila (Ruchi)
STORY BY: Chuck Lorre, Steve Holland, Adam Faberman
TELEPLAY BY: Maria Ferrari, Andy Gordon, Tara Hernandez
DIRECTED BY: Mark Cendrowski

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