Sep. 24, 2007
30 min.
CBS TV Network

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The Big Bang Theory tv show photo

The Big Bang Theory

Leonard and Sheldon are brilliant physicists, the kind of "beautiful minds" that understand how the universe works. But none of that genius helps them interact with people, especially women. All this begins to change when a free-spirited beauty named Penny moves in next door.

The Big Bang Theory Season 9 (2015-2016)

9x01 9 9x01 The Matrimony Momentum
Brilliant Sheldon is confronted by a mystery of the universe he cannot unravel: when a woman wants time apart to think, exactly how much time does that mean, and is there any way ...
Sep. 21, 2015
9x02 9 9x02 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 ...
Sep. 28, 2015
9x03 9 9x03 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 ...
Oct. 05, 2015
9x04 9 9x04 The 2003 Approximation
Leonard and Penny finally move in together leaving Sheldon very upset with this big change in his life and wishing he could go back to a time when he had no emotions in 2003 before ...
Oct. 12, 2015
9x05 9 9x05 The Perspiration Implementation
The guys want to learn to be better at sports so Barry Kripke teaches them fencing. Meanwhile the girls help Stuart try to get more women to come to the comic book store. Amy gets asked ...
Oct. 19, 2015
9x06 9 9x06 The Helium Insufficiency
In the midst of a nation-wide helium shortage, Sheldon and Leonard find out that other scientists are trying to steal their Superfluid Hellium idea. Sheldon and Leonard take desperate ...
Oct. 26, 2015
9x07 9 9x07 The Spock Resonance
Wil Wheaton interviews Sheldon for a Star Trek documentary where he reveals the ring and his plan to propose to Amy. Bernadette wants to start renovating the house and the topic of ...
Nov. 05, 2015
9x08 9 9x08 The Mystery Date Observation
Amy has a formal date which Leonard, Penny and Bernadette secretly spy on. Sheldon has Howard and Raj help him find a new girlfriend since they found Amy for him.
Nov. 12, 2015
9x09 9 9x09 The Platonic Permutation
It’s Thanksgiving. Sheldon and Amy go on a lunch date to the aquarium as friends. Howard, Bernadette, Raj and Emily help out at a soup kitchen. Leonard and Penny make their first ...
Nov. 19, 2015
9x10 9 9x10 The Earworm Reverberation
Sheldon, while listening to a Beach Boys song, realizes he cannot get the song or Amy out of his head and realizes how much she has done for him and how much she means to him.
Dec. 10, 2015
9x11 9 9x11 The Opening Night Excitation
As the guys prepare to go to the premiere of the new Star Wars movie, Sheldon plans a special event for Amy's birthday.
Dec. 17, 2015
9x12 9 9x12 The Sales Call Sublimation
Leonard visits a psychiatrist so Penny can make a sales call. Stuart moves out of the Wolowitz house. Sheldon works with Raj looking for extra-solar planets.
Jan. 07, 2016
9x13 9 9x13 The Empathy Optimization
The gang decides to head to Vegas for the week on a party bus. Sheldon learns about the importance of empathy and saying sorry.
Jan. 14, 2016
9x14 9 9x14 The Meemaw Materialization
Meemaw meets Amy, but it isn't all roses. Meemaw seems to have an axe to grind with her. Sheldon comes to Amy's defense, but not before Meemaw lets a little secret of his slip.
Feb. 04, 2016
9x15 9 9x15 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 ...
Feb. 11, 2016
9x16 9 9x16 The Positive Negative Reaction
Howard learns he is going to be a father and his reaction isn’t exactly what Bernadette expected. How will the gang react?
Feb. 18, 2016
9x17 9 9x17 The Celebration Experimentation
Sheldon has a phobia about celebrating his birthday. So the gang decides to throw him a party to show how much fun it can be. They even get Adam West, the original Batman, to attend ...
Feb. 25, 2016
9x18 9 9x18 The Application Deterioration
The guys find out the university will take 75% of the profit from their invention and worse , Howard is entitled to none. So Sheldon draws up a contract to split their share equally ...
Mar. 10, 2016
9x19 9 9x19 The Solder Excursion Diversion
Howard and Leonard lie to their spouses about seeing a movie premiere, while Raj spills the beans about their lie. Amy buys Sheldon new laptop when he cannot bring himself to replace ...
Mar. 31, 2016
9x20 9 9x20 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 ...
Apr. 07, 2016
9x21 9 9x21 The Viewing Party Combustion
A Game of Thrones viewing party has things go awry before the party ever begins.
Apr. 21, 2016
9x22 9 9x22 The Fermentation Bifurcation
Sheldon and Bernadette stay home while the rest go to a wine tasting.
Apr. 28, 2016
9x23 9 9x23 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, comes to town and Penny struggles to make a connection ...
May. 05, 2016
9x24 9 9x24 The Convergence Convergence
Leonard and Penny get remarried in front of their friends (who show up), Leonard's parents, Beverly and Alfred (Judd Hirsch) and Sheldon's mother, Mary, who finds something in common ...
May. 12, 2016

Season 9 Characters

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Season 9 Videos

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Season 9 Trivia

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