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The Big Bang Theory

Episodes

24 Episodes 2015 - 2016

Season 9 of the comedy series explores darker themes, with a lot more drama interjected between the humorous bits the show is known for. Leonard (Johnny Galecki) and Penny (Kaley Cuoco) are back from their Vegas wedding and start having doubts about their relationships: Is she settling for the safe choice and is he clinging to the beautiful girl of his dreams? After the breakup, Sheldon (Jim Parsons) learns he has to put other people's needs ahead of his own, while Amy (Mayim Bialik) finally learns to actively ask for the things she needs. Howard (Simon Helberg) and Bernadette (Melissa Rauch) deal with a pregnancy, and Raj (Kunal Nayyar) and Emily (Laura Spencer) have their relationship tested when Claire (Alessandra torresani) enters the picture.

Episode 1

The Matrimonial Momentum

Mon, Sep 21, 2015 31 mins

Season 9 premiere, Penny has a problem dealing with Leonard's confession about having kissed another woman, while Sheldon is confused about Amy calling a timeout on their relationship.

Where to Watch
The Big Bang Theory, Season 9 Episode 1 image

Episode 2

The Separation Oscillation

Mon, Sep 28, 2015 31 mins

To ease Penny's mind, Leonard pays a visit to the woman he kissed during his expedition to the North Sea, while Sheldon's breakup with Amy leads him to retaliate by shooting a special episode of "Fun With Flags." Later, Bernadette is wracked with guilt over withholding a secret from Penny.

Where to Watch
The Big Bang Theory, Season 9 Episode 2 image

Episode 3

The Bachelor Party Corrosion

Mon, Oct 5, 2015 31 mins

The guys surprise Leonard with a belated bachelor party weekend in Mexico, but their plans hit a bump in the road when they get a flat tire on the way. Meanwhile, the girls lean on Penny to tell her unsuspecting family that she and Leonard eloped.

Where to Watch
The Big Bang Theory, Season 9 Episode 3 image

Episode 4

The 2003 Approximation

Mon, Oct 12, 2015 30 mins

Sheldon reverts back to 2003 when he learns that Leonard and Penny are moving in together. Meanwhile, Howard and Raj form a band to play at the comic-book store.

Where to Watch
The Big Bang Theory, Season 9 Episode 4 image

Episode 5

The Perspiration Implementation

Mon, Oct 19, 2015 31 mins

When Barry Kripke gives the guys fencing lessons, he makes a point of letting Sheldon know he's interested in dating Amy. Also, Stuart has trouble getting female customers at the Comic Book Store, so Penny, Amy and Bernadette stop by to help out.

Where to Watch
The Big Bang Theory, Season 9 Episode 5 image

Episode 6

The Helium Insufficiency

Mon, Oct 26, 2015 30 mins

A helium shortage leads Sheldon and Leonard to do business with a dealer in the black market in order to acquire some of the element for an experiment they need to complete. Meanwhile, Penny and Bernadette download a dating app on Amy's phone in hopes that she'll connect with a new man.

Where to Watch
The Big Bang Theory, Season 9 Episode 6 image

Episode 7

The Spock Resonance

Thu, Nov 5, 2015 31 mins

Sheldon's interview for a "Star Trek" documentary focusing on Spock turns up a shocking revelation about his breakup with Amy. Meanwhile, the Wolowitzes haggle over the remodelling of his family home.

Where to Watch
The Big Bang Theory, Season 9 Episode 7 image

Episode 8

The Mystery Date Observation

Thu, Nov 12, 2015 31 mins

When Leonard, Penny and Bernadette learn that Amy is going out on a dinner date, the trio set out to spy on her and the guy. Meanwhile, Sheldon recruits Raj and Howard to find a woman for him, since they were responsible for getting Amy and him together.

Where to Watch
The Big Bang Theory, Season 9 Episode 8 image

Episode 9

The Platonic Permutation

Thu, Nov 19, 2015 31 mins

Now just friends, Sheldon and Amy spend Thanksgiving at the aquarium; a reluctant Wolowitz volunteers at a soup kitchen with Bernadette, Raj and Emily; and Penny realizes that Leonard knows a bit more about her than he's let on.

Where to Watch
The Big Bang Theory, Season 9 Episode 9 image

Episode 10

The Earworm Reverberation

Thu, Dec 10, 2015 30 mins

God only knows what song is constantly playing in Sheldon's head, but it reminds him of Amy and leads to a surprising revelation. Meanwhile, she is back in the dating game; and Raj and Howard go on a quest to find the only fan of their band, Footprints on the Moon.

Where to Watch
The Big Bang Theory, Season 9 Episode 10 image

Episode 11

The Opening Night Excitation

Thu, Dec 17, 2015 30 mins

Prof. Proton visits Sheldon in a dream and gives him Obi-Wan Kenobi-like advice about whether to go see the new "Star Wars" film or spend the time with newly reunited girlfriend Amy on her birthday. Meanwhile, Leonard, Howard and Raj try to decide who will get their extra ticket to the movie premiere.

Where to Watch
The Big Bang Theory, Season 9 Episode 11 image

Episode 12

The Sales Call Sublimation

Thu, Jan 7, 2016 31 mins

Penny entices Leonard to meet with a psychiatrist and the results are surprising; Stuart moves out of the Wolowitz house and Howard and Bernadette find themselves at a loss. Also, in a once-in-a-blue-moon occasion, Sheldon teams with Raj on an astronomical discovery.

Where to Watch
The Big Bang Theory, Season 9 Episode 12 image

Episode 13

The Empathy Optimization

Thu, Jan 14, 2016 30 mins

Dealing with an under-the-weather Sheldon is so draining for Penny, Leonard and the gang that they decide to treat themselves to a Sheldon-less weekend.

Where to Watch
The Big Bang Theory, Season 9 Episode 13 image

Episode 14

The Meemaw Materialization

Thu, Feb 4, 2016 31 mins

Sheldon's grandmother, aka Meemaw, visits and there's friction between her and Amy, which intensifies after the elderly woman blurts out a secret about Sheldon. Meanwhile, Raj is conflicted when an attractive writer for a children's sci-fi show asks to collaborate with him.

Where to Watch
The Big Bang Theory, Season 9 Episode 14 image

Episode 15

The Valentino Submergence

Thu, Feb 11, 2016 30 mins

Sheldon and Amy celebrate Valentine's Day with an episode of "Fun With Flags"; Leonard and Penny feel the pangs of aging; Howard and Bernadette are surprised by what they find in their hot tub; and Raj can't decide between Emily and the comely woman he met at the Comic Bookstore.

Where to Watch
The Big Bang Theory, Season 9 Episode 15 image

Episode 16

The Positive Negative Reaction

Thu, Feb 18, 2016 31 mins

The gang learns Bernadette is pregnant and celebrate by singing karaoke. Meanwhile, Wolowitz freaks out over the pregnancy announcement and becomes convinced he must make more money to provide for the baby.

Where to Watch
The Big Bang Theory, Season 9 Episode 16 image

Episode 17

The Celebration Experimentation

Thu, Feb 25, 2016 31 mins

Sheldon and the gang celebrate his birthday and he's surprised by a special guest. Adam West appears.

Where to Watch
The Big Bang Theory, Season 9 Episode 17 image

Episode 18

The Application Deterioration

Thu, Mar 10, 2016 31 mins

Howard reconsiders entering into a legal partnership with Leonard and Sheldon regarding the patent for the infinite persistence gyroscope. Also, the women offer Raj dating advice after Emily reaches out to him following their breakup.

Where to Watch
The Big Bang Theory, Season 9 Episode 18 image

Episode 19

The Solder Excursion Diversion

Thu, Mar 31, 2016 30 mins

Sheldon shocks Amy with a startling revelation after she buys him a new laptop. Meanwhile, Raj throws Leonard and Howard under the bus after they lie to their wives and sneak off to an early screening of a movie.

Where to Watch
The Big Bang Theory, Season 9 Episode 19 image

Episode 20

The Big Bear Precipitation

Thu, Apr 7, 2016 31 mins

A weekend getaway to a cabin takes a troublesome turn when Sheldon reveals a secret about Leonard, while back at home, Raj gets a little too gung ho with pregnancy presents, and Bernadette and Howard have to get him to back off.

Where to Watch
The Big Bang Theory, Season 9 Episode 20 image

Episode 21

The Viewing Party Combustion

Thu, Apr 21, 2016 31 mins

During a group gathering, a disagreement between Leonard and Sheldon turns into a battle royal, forcing everyone to choose sides.

Where to Watch
The Big Bang Theory, Season 9 Episode 21 image

Episode 22

The Fermentation Bifurcation

Thu, Apr 28, 2016 31 mins

Sheldon stays behind to spend quality time with the pregnant Bernadette when the rest of the gang toddles off to a wine-tasting event, where they run into Penny's former boyfriend, and Raj introduces his new girlfriend.

Where to Watch
The Big Bang Theory, Season 9 Episode 22 image

Episode 23

The Line Substitution Solution

Thu, May 5, 2016 31 mins

When Sheldon decides he'd rather go to a movie screening than hang out with Amy, he hires Stuart to spend the day with her. Meanwhile, Leonard's mother visits, and Penny just can't seem to connect with her.

Where to Watch
The Big Bang Theory, Season 9 Episode 23 image

Episode 24

The Convergence Convergence

Thu, May 12, 2016 31 mins

In the Season 9 finale, Leonard's recently divorced parents roll into town, as does Sheldon's holy-roller mother, and all hell breaks loose. Meanwhile, Raj and Howard are concerned when the government unexpectedly contacts them about their guidance system.

Where to Watch
The Big Bang Theory, Season 9 Episode 24 image