The Geology Elevation" -- Pictured Behind the Scenes. When Bert , a Caltech geologist, wins the MacArthur Genius fellowship, Sheldon is overcome with...
The Thespian Catalyst" -- Sheldon hopes acting lessons from Penny will help him become a better teacher, while Koothrappali fantasizes about his best...
Quarterfinal: Ray Romano, Joel Kim Booster and Melissa Rauch All jokes are put aside when comedians Ray Romano , Melissa Rauch and Joel Kim Booster...
Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator, on THE BIG BANG THEORY, Monday, May 17 on the...
"The Tangerine Factor" -- The cast of THE BIG BANG THEORY - Kunal Nayyar , Johnny Galecki , Kaley Cuoco , Jim Parsons and Simon Helberg - on set with...
The Viewing Party Combustion" --Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a...
Quarterfinal: Ray Romano, Joel Kim Booster and Melissa Rauch All jokes are put aside when comedians Ray Romano , Melissa Rauch and Joel Kim Booster...
The Stockholm Syndrome" - Pictured: Leonard Hofstadter and Penny . Bernadette and Wolowitz leave their kids for the first time, Penny and Leonard try...
"The Excelsior Acquisition" -- While Leonard prepares for a signing by legendary comic book creator Stan Lee, Sheldon winds up in traffic court...
"The Gothowitz Deviation" -- Howard and Raj visit a Goth nightclub to pick up women while Sheldon attempts to build a better Penny using...
The Retraction Reaction" - Pictured: Leonard Hofstadter , Rajesh Koothrappali , Howard Wolowitz and Sheldon Cooper . Leonard angers the university --...
The Terminator Decoupling" -- A train trip to San Francisco takes a major detour when Koothrappali , Sheldon , Wolowitz and Leonard , discover that...
The Cushion Saturation" -- Leonard tries to mediate when a paintball game leads to a fight between Penny and Sheldon , on THE BIG BANG THEORY,...
Cast members of "The Big Bang Theory" Jim Parsons, Simon Helberg, Kaley Cuoco, Kunal Nayyar, Johnny Galecki at the The Alzheimer's Association's 17th...
The Bad Fish Paradigm" -- After her first date with Leonard goes awry, Penny finds an unwilling confidant in Leonard's anti-social roommate, Sheldon...
The Bad Fish Paradigm" - After his first date with Penny goes awry, Leonard receives the post-date analysis from friends Wolowitz , Koothrappali and...
The cast and crew of 'The Big Bang Theory' accept an award onstage during the People's Choice Awards 2017 at Microsoft Theater on January 18, 2017 in...
The Line Substitution Solution" -- Pictured: Penny . Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie screening. Also,...
The Line Substitution Solution" -- Pictured: Beverly and Penny . Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie...
The Line Substitution Solution" -- Pictured: Penny . Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie screening. Also,...
The Solder Excursion Diversion" --Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of...
The Celebration Experimentation" -- After more than nine years together, the gang finally celebrates Sheldon's birthday, surprising him with a...
The Celebration Experimentation" -- After more than nine years together, the gang finally celebrates Sheldon's birthday, surprising him with a...
The Celebration Experimentation" -- After more than nine years together, the gang finally celebrates Sheldon's birthday, surprising him with a...
The Positive Negative Reaction" -- Bernadette is concerned when Wolowitz freaks out over her pregnancy announcement, on THE BIG BANG THEORY,...
Actress Kaley Cuoco attends "The Big Bang Theory" 200th episode celebration at Vibiana on February 20, 2016 in Los Angeles, California.
Actress Kaley Cuoco attends "The Big Bang Theory" 200th episode celebration at Vibiana on February 20, 2016 in Los Angeles, California.
Actress Kaley Cuoco attends "The Big Bang Theory" 200th episode celebration at Vibiana on February 20, 2016 in Los Angeles, California.
Actress Kaley Cuoco arrives at CBS's "The Big Bang Theory" Celebrates 200th Episode at Vibiana on February 20, 2016 in Los Angeles, California.
The Valentino Submergence" -- Sheldon and Amy host a live Valentine's Day episode of Fun with Flag, on THE BIG BANG THEORY, Thursday, Feb. 11 , on...
The Valentino Submergence" -- Leonard and Penny grapple with getting older, on THE BIG BANG THEORY, Thursday, Feb. 11 , on the CBS Television Network.
Melissa Rauch, Johnny Galecki, Kaley Cuoco, Simon Helberg, Jim Parsons, Mayim Bialik and Kunal Nayyar, winners of Favorite Network TV Comedy and...
The Opening Night Excitation" -- After more than five years of dating, Sheldon and Amy spend their first night together, on THE BIG BANG THEORY,...
The Platonic Permutation" -- Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, on THE BIG BANG THEORY,...
The Platonic Permutation" -- Penny discovers that Leonard knows more about her than she thought, on THE BIG BANG THEORY, Thursday, Nov. 19 , on the...
The Helium Insufficiency" -- 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,...
The Perspiration Implementation" -- When Stuart struggles to get female customers at the Comic Book Store, Penny, Amy and Bernadette come by to help...
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...
The Bachelor Party Corrosion" -- The girls force Penny to finally tell her family that she eloped with Leonard, on THE BIG BANG THEORY, Monday, Oct....
The Matrimonial Momentum" -- After driving to Vegas to get married, Penny struggles with Leonard's confession that he kissed another girl, on the...
The Proton Displacement" -- Sheldon feels slighted when Professor Proton seeks advice from Leonard instead of him, and he seeks revenge by...
The Proton Displacement" -- Sheldon feels slighted when Professor Proton seeks advice from Leonard instead of him, and he seeks revenge by...
The Proton Displacement" -- Sheldon feels slighted when Professor Proton seeks advice from Leonard instead of him, and he seeks revenge by...
Actors Bob Newhart, Melissa Rauch, Mayim Bialik, Kunal Nayyar, Simon Helberg, Kaley Cuoco, Jim Parsons, Johnny Galecki, executive producers Steve...
Cast of the big bang theory L-R: Kaley Cuoco, Kunal Nayyar, Melissa Rauch, Simon Helberg, Mayim Bialik, Jim Parsons and Johnny Galecki attend the...
September 02: Big Bang Theory star Jim Parsons during the US Open Tennis Championship 2022 at the USTA National Tennis Centre on September 2nd 2022...
Quarterfinal: Ray Romano, Joel Kim Booster and Melissa Rauch All jokes are put aside when comedians Ray Romano , Melissa Rauch and Joel Kim Booster...
Quarterfinal: Ray Romano, Joel Kim Booster and Melissa Rauch All jokes are put aside when comedians Ray Romano , Melissa Rauch and Joel Kim Booster...
Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Mayim Bialik and Melissa Rauch from the cast of "The Big Bang Theory" attend...
The Stockholm Syndrome" - Pictured: Howard Wolowitz , Amy Farrah Fowler , Sheldon Cooper and Leonard Hofstadter . Bernadette and Wolowitz leave their...
The Cast Of "The Big Bang Theory" Places Their Handprints In The Cement At The TCL Chinese Theatre IMAX Forecourt held on May 1, 2019 in Hollywood,...
Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Mayim Bialik, and Melissa Rauch of The Cast Of "The Big Bang Theory", Place...
The Cohabitation Formulation" -- As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with...
The cast of The Big Bang Theory Johnny Galecki and Kaley Cuoco pose at a portrait session for TV Guide, in Los Angeles, CA on September 20, 2010....
Actors Johnny Galecki and Jim Parsons speak at "The Big Bang Theory" panel during 2010 Summer TCA Tour Day 1 at the Beverly Hilton Hotel on July 28,...
Johnny Galecki was a guest on "THE VIEW," Monday, May 17, 2010 airing on the Disney General Entertainment Content via Getty Images Television...
The Wheaton Recurrence" -- The guys face off against Sheldon's nemesis, Wil Wheaton, and end up the worse for wear, on THE BIG BANG THEORY, Monday,...
"The Excelsior Acquisition" -- Instead of attending a signing by comic book legend Stan Lee , Sheldon winds up in traffic court when he gets a ticket...
Cast with writers and producers of The Big Bang Theory pose for a portrait during the People's Choice Awards 2010 held at Nokia Theatre L.A. Live on...
Cast with writers and producers of The Big Bang Theory pose for a portrait during the People's Choice Awards 2010 held at Nokia Theatre L.A. Live on...
