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The Big Bang Theory

Season 9 2015 - 2016

  • 2015-09-22T02:00:00+02:00 on CBS
  • 22 mins
  • 7 hours, 37 mins (24 episodes)
  • United States
  • English
  • Comedy

Our two genius roommates, Leonard and Sheldon, and their friends are back once again (smarter, but no wiser). Last season, Sheldon went soul-searching (on a train, of course) and was prepared to make some substantial revisions on his Relationship Agreement with Amy, when everything changed. Leonard, meanwhile, was off to Vegas with Penny to finally tie the knot in the season finale. Howard finds himself alone with Bernadette after the sudden passing of his mother; while Raj is not only talking to women – he’s getting exclusive with Emily. Together, they will all learn that life is far more complicated outside of the lab as love and friendship never produce predictable results!


24 episodes

9x01 The Matrimonial Momentum

  • Season Premiere

    2015-09-22T02:00:00+02:00 — 20 mins

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 to hurry the process along? In Las Vegas, Penny and Leonard march closer to marching down the aisle, but has Penny gotten over Leonard’s infidelity? And if so, will he do anything to un-get her over it?

9x02 The Separation Oscillation

  • 2015-09-29T02:00:00+02:00 — 19 mins

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.

9x03 The Bachelor Party Corrosion

  • 2015-10-06T02:00:00+02:00 — 19 mins

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.

9x04 The 2003 Approximation

  • 2015-10-13T02:00:00+02:00 — 18 mins

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 he met Leonard. Raj, Howard and Stuart attempt to form a band.

9x05 The Perspiration Implementation

  • 2015-10-20T02:00:00+02:00 — 18 mins

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.

9x06 The Helium Insufficiency

  • 2015-10-27T01:00:00+01:00 — 19 mins

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.

9x07 The Spock Resonance

  • 2015-11-06T02:00:00+01:00 — 18 mins

Adam Nimoy, friend of Wil Wheaton and son of Leonard Nimoy, interviews Sheldon for a Star Trek documentary. Sheldon gets off topic and ends up revealing an engagement ring and his plan to propose to Amy. Bernadette wants to start renovating the house and the issue of starting a family with Howard is brought up.

9x08 The Mystery Date Observation

  • 2015-11-13T02:00:00+01:00 — 19 mins

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.

9x09 The Platonic Permutation

  • 2015-11-20T02:00:00+01:00 — 21 mins

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 Thanksgiving dinner as a married couple.

9x10 The Earworm Reverberation

  • 2015-12-11T02:00:00+01:00 — 21 mins

Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, "Footprints on the Moon".

9x11 The Opening Night Excitation

  • 2015-12-18T02:00:00+01:00 — 21 mins

As the guys prepare to go to the premiere of the new Star Wars movie, Sheldon plans a special event for Amy's birthday.

9x12 The Sales Call Sublimation

  • 2016-01-08T02:00:00+01:00 — 18 mins

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.

9x13 The Empathy Optimization

  • 2016-01-15T02:00:00+01:00 — 18 mins

The gang decides to head to Vegas for the week on a party bus. Sheldon learns about the importance of empathy and saying sorry.

9x14 The Meemaw Materialization

  • 2016-02-05T02:00:00+01:00 — 18 mins

Sheldon is 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.

9x15 The Valentino Submergence

  • 2016-02-12T02:00:00+01:00 — 19 mins

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.

9x16 The Positive Negative Reaction

  • 2016-02-19T02:00:00+01:00 — 19 mins

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 a baby.

9x17 The Celebration Experimentation

  • 2016-02-26T02:00:00+01:00 — 19 mins

After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.

9x18 The Application Deterioration

  • 2016-03-11T02:00:00+01:00 — 19 mins

Sheldon works up a contract to split their portion of their guidance system invention royalties, but Bernadette does not like how it's done. Raj must again decide between Emily and Claire when they both contact him.

9x19 The Solder Excursion Diversion

  • 2016-04-01T02:00:00+02:00 — 20 mins

Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie.

9x20 The Big Bear Precipitation

  • 2016-04-08T02:00:00+02:00 — 19 mins

Secrets are revealed when Amy and Sheldon join Penny and Leonard on a weekend cabin trip. Raj is more excited about Howard's and Bernadette's impending parenthood than they are.

9x21 The Viewing Party Combustion

  • 2016-04-22T02:00:00+02:00 — 18 mins

Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.

9x22 The Fermentation Bifurcation

  • 2016-04-29T02:00:00+02:00 — 20 mins

Sheldon and Bernadette spend a night together while the rest of the gang goes to a wine tasting party, but things get uncomfortable for Raj when Zack also attends and takes an interest in Claire.

9x23 The Line Substitution Solution

  • 2016-05-06T02:00:00+02:00 — 18 mins

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 with her.

9x24 The Convergence Convergence

  • 2016-05-13T02:00:00+02:00 — 19 mins

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 with Alfred. Howard gets an unknown email from the Air Force about his invention.