The Big Bang Theory

The Big Bang Theory

Prepare to enter phase nine of television’s perpetual laughter experiment as THE BIG BANG THEORY successfully fuses the elements of science and sitcom. Our two genius roommates - Leonard and Sheldon - and their friends are back once again and together, they will all learn that life is far more complicated outside of the lab as love and friendship never produce predictable results!
Prepare to enter phase nine of television’s perpetual laughter experiment as THE BIG BANG THEORY successfully fuses the elements of science and sitcom. Our two genius roommates - Leonard and Sheldon - and their friends are back once again and together, they will all learn that life is far more complicated outside of the lab as love and friendship never produce predictable results!

Season 9 (24 episodes)

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  • 1. The Matrimonial Momentum

    Original air date: 09/21/2015 Runtime: 20:22 min.

    Original air date: 09/21/2015 Runtime: 20:22 min. After driving to Vegas to get married, Penny (KALEY CUOCO-SWEETING) struggles with Leonard’s confession that he kissed another girl on the North Sea in the ninth season premiere.

  • 2. The Separation Oscillation

    Original air date: 09/28/2015 Runtime: 19:10 min.

    Original air date: 09/28/2015 Runtime: 19:10 min. Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny’s mind at ease. And Sheldon tries to retaliate after his breakup with Amy, using “Fun with Flags.”

  • 3. The Bachelor Party Corrosion

    Original air date: 10/05/2015 Runtime: 19:29 min.

    Original air date: 10/05/2015 Runtime: 19:29 min. The guys surprise Leonard by taking him to Mexico for a belated bachelor party weekend, while the girls force Penny to finally tell her family that she eloped with Leonard.

  • 4. The 2003 Approximation

    Original air date: 10/12/2015 Runtime: 18:44 min.

    Original air date: 10/12/2015 Runtime: 18:44 min. When Sheldon (JIM PARSONS) learns of an impending change in his living arrangements, he decides to revert back to 2003 – a simpler time before he met Leonard or Penny.

  • 5. The Perspiration Implementation

    Original air date: 10/19/2015 Runtime: 18:36 min.

    Original air date: 10/19/2015 Runtime: 18:36 min. When the guys take fencing lessons from Barry Kripke (JOHN ROSS BOWIE), Sheldon finds himself in an awkward position when Kripke expresses interest in Amy.

  • 6. The Helium Insufficiency

    Original air date: 10/26/2015 Runtime: 19:07 min.

    Original air date: 10/26/2015 Runtime: 19:07 min. In the midst of a nationwide helium shortage, Leonard and Sheldon are forced to make a black market purchase from a dealer (MICHAEL RAPAPORT) in order to complete an experiment.

  • 7. The Spock Resonance

    Original air date: 11/05/2015 Runtime: 18:38 min.

    Original air date: 11/05/2015 Runtime: 18:38 min. Leonard and Penny are shocked to learn that Sheldon had an engagement ring for Amy. Meanwhile Howard and Bernadette disagree over remodeling his childhood home.

  • 8. The Mystery Date Observation

    Original air date: 11/12/2015 Runtime: 19:12 min.

    Original air date: 11/12/2015 Runtime: 19:12 min. With Amy out on a date with a mystery man, Sheldon enlists the help of Howard and Raj to find a new girlfriend by posting online. And when Amy is coy with the details about the guy she’s dating, Penny and Bernadette decide to spy.

  • 9. The Platonic Permutation

    Original air date: 11/19/2015 Runtime: 21:02 min.

    Original air date: 11/19/2015 Runtime: 21:02 min. While Howard reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, Sheldon and Amy spend Thanksgiving together at the Aquarium as friends.

  • 10. The Earworm Reverberation

    Original air date: 12/10/2015 Runtime: 21:24 min.

    Original air date: 12/10/2015 Runtime: 21:24 min. After driving Leonard and Penny crazy by his desperate attempts to remember the name of a song stuck in his head, Sheldon has a revelation when he realizes why.

  • 11. The Opening Night Excitation

    Original air date: 12/17/2015 Runtime: 21:27 min.

    Original air date: 12/17/2015 Runtime: 21:27 min. After more than five years of dating, Sheldon and Amy spend their first night together; BOB NEWHART returns as Sheldon’s Obi-Wan to advise him.

  • 12. The Sales Call Sublimination

    Original air date: 01/07/2016 Runtime: 18:28 min.

    Original air date: 01/07/2016 Runtime: 18:28 min. Leonard agrees to meet with a psychiatrist (Jane Kaczmarek) on Penny's behalf; Sheldon and Koothrappali work together on an astronomical discovery; Wolowitz and Bernadette struggle with their feelings when Stuart moves out.

  • 13. The Empathy Optimization

    Original air date: 01/14/2016 Runtime: 18:51 min.

    Original air date: 01/14/2016 Runtime: 18:51 min. After having to deal with Sheldon being sick, Leonard, Penny and the gang try to treat themselves to a Sheldon free weekend.

  • 14. The Meemaw Materialization

    Original air date: 02/04/2016 Runtime: 18:50 min.

    Original air date: 02/04/2016 Runtime: 18:50 min. Sheldon’s thrilled when his Meemaw (guest star JUNE SQUIBB) comes to visit, but his excitement quickly fades when she butts heads with Amy. Also, Raj meets a new girl (guest star ALESSANDRA TORRESANI) at the comic book store who makes him question his relationship with Emily.

  • 15. The Valentino Submergence

    Original air date: 02/11/2016 Runtime: 19:45 min.

    Original air date: 02/11/2016 Runtime: 19:45 min. Sheldon and Amy host a special, live episode of "Fun with Flags" for Valentine's Day; while Raj is torn between Emily and the new girl he met at the comic book store.

  • 16. The Positive Negative Reaction

    Original air date: 02/18/2016 Runtime: 19:32 min.

    Original air date: 02/18/2016 Runtime: 19:32 min. When the gang finds out about Bernadette’s pregnancy, they celebrate by singing karaoke. Meanwhile, Bernadette is concerned when Howard freaks out over her pregnancy announcement, as he’s convinced that he needs to make more money to provide for the baby.

  • 17. The Celebration Experimentation

    Original air date: 02/25/2016 Runtime: 18:58 min.

    Original air date: 02/25/2016 Runtime: 18:58 min. After nine years together, the gang finally celebrates Sheldon’s birthday with a few special guests – including Batman’s ADAM WEST – on the 200th episode.

  • 18. The Application Deterioration

    Original air date: 03/10/2016 Runtime: 19:17 min.

    Original air date: 03/10/2016 Runtime: 19:17 min. Leonard, Sheldon and Howard run into problems when they file for a patent for their infinite persistence gyroscope. Meanwhile, Penny, Amy and Bernadette give Raj dating advice after Emily reaches out to him after their breakup.

  • 19. The Soldier Excursion Diversion

    Original air date: 03/31/2016 Runtime: 20:42 min.

    Original air date: 03/31/2016 Runtime: 20:42 min. When Sheldon’s laptop dies, it leads him to share a deep secret with Amy after she buys him a new one; Meanwhile, Raj sells out Leonard and Howard after they lie to their wives in order to attend an early screening of a movie.

  • 20. The Big Bear Precipitation

    Original air date: 04/07/2016 Runtime: 18:57 min.

    Original air date: 04/07/2016 Runtime: 18:57 min. Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy; Meanwhile Howard and Bernadette must draw the line when Raj goes overboard with pregnancy gifts.

  • 21. The Viewing Party Combustion

    Original air date: 04/21/2016 Runtime: 18:34 min.

    Original air date: 04/21/2016 Runtime: 18:34 min. When a small argument between Leonard and Sheldon erupts into a heated fight, everyone must take sides during a group get-together.

  • 22. The Fermentation Bifurcation

    Original air date: 04/28/2016 Runtime: 19:58 min.

    Original air date: 04/28/2016 Runtime: 19:58 min. The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack (recurring guest star BRIAN THOMAS SMITH); 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 Raj introduces his new girlfriend, Claire (ALESSANDRA TORRESANI).

  • 23. The Line Substitution Solution

    Original air date: 05/05/2016 Runtime: 18:35 min.

    Original air date: 05/05/2016 Runtime: 18:35 min. 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.

  • 24. The Convergence Convergence

    Original air date: 05/12/2016 Runtime: 19:46 min.

    Original air date: 05/12/2016 Runtime: 19:46 min. Chaos ensues in the ninth season finale when Leonard’s recently divorced parents (special guest stars JUDD HIRSCH and CHRISTINE BARANSKI) and Sheldon’s devoutly religious mother come to town. Meanwhile, Howard and Raj think the government is out to get them, when they’re contacted about their guidance system.