The Big Bang Theory

Two nerdy physicists share an apartment and an unlikely friendship with their beautiful neighbor with whom one of them is infatuated. Like the universe after the big bang, the show's popularity expanded, thanks to breakout star Jim Parsons, along with the chemistry among the friends and the developing romance between Leonard and Penny. The addition of M (more…)

Provider: Eastern (ET) Change
Tue Feb 20 7:00pm
The Helium Insufficiency(Season 9, Episode 6) TBS

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 (more…)

I’ll Watch694 Watching
Tue Feb 20 7:30pm
The Spock Resonance(Season 9, Episode 7) TBS

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 remodeling of his family home.

I’ll Watch1173 Watching
Tue Feb 20 8:00pm
The Mystery Date Observation(Season 9, Episode 8) TBS

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.

I’ll Watch1181 Watching
Tue Feb 20 8:30pm
The Platonic Permutation(Season 9, Episode 9) TBS

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.

I’ll Watch663 Watching
Tue Feb 20 9:00pm
The Earworm Reverberation(Season 9, Episode 10) TBS

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 (more…)

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Tue Feb 20 9:30pm
The Opening Night Excitation(Season 9, Episode 11) TBS

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 (more…)

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Tue Feb 20 10:00pm
The Sales Call Sublimation(Season 9, Episode 12) TBS

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 (more…)

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Wed Feb 21 7:00pm
The Empathy Optimization(Season 9, Episode 13) TBS

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.

I’ll Watch1167 Watching
Wed Feb 21 7:30pm
The Meemaw Materialization(Season 9, Episode 14) TBS

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 col (more…)

I’ll Watch1265 Watching
Wed Feb 21 8:00pm
The Valentino Submergence(Season 9, Episode 15) TBS

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 (more…)

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Wed Feb 21 8:30pm
The Positive Negative Reaction(Season 9, Episode 16) TBS

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.

I’ll Watch645 Watching
Wed Feb 21 9:00pm
The Celebration Experimentation(Season 9, Episode 17) TBS

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

I’ll Watch949 Watching
Wed Feb 21 9:30pm
The Application Deterioration(Season 9, Episode 18) TBS

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.

I’ll Watch960 Watching
Wed Feb 21 10:00pm
The Solder Excursion Diversion(Season 9, Episode 19) TBS

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.

I’ll Watch999 Watching
Thu Feb 22 8:00pm
The Proton Regeneration(Season 11, Episode 6) CBS

Sheldon goes head-to-head with Wil Wheaton for the role of the new Professor Proton. Meanwhile, Penny steps in and takes care of Halley when Bernadette and Wolowitz both wind up on bed rest.

I’ll Watch454 Watching
Thu Feb 22 9:00pm
The Big Bear Precipitation(Season 9, Episode 20) TBS

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.

I’ll Watch723 Watching
Thu Feb 22 9:00pm
The Geology Methodology(Season 11, Episode 7) CBS

Sheldon and Bert collaborate on a research project, despite Sheldon's embarrassment. Also, Penny and Bernadette coach Koothrappali on how to navigate his relationship with Ruchi.

I’ll Watch259 Watching
Thu Feb 22 9:30pm
The Viewing Party Combustion(Season 9, Episode 21) TBS

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

I’ll Watch918 Watching
Thu Feb 22 10:00pm
The Fermentation Bifurcation(Season 9, Episode 22) TBS

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.

I’ll Watch948 Watching
Thu Feb 22 10:30pm
The Line Substitution Solution(Season 9, Episode 23) TBS

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.

I’ll Watch801 Watching
Sat Feb 24 8:00pm
The Convergence Convergence(Season 9, Episode 24) TBS

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 (more…)

I’ll Watch1101 Watching
Sat Feb 24 8:30pm
The Conjugal Conjecture(Season 10, Episode 1) TBS

In the Season 10 premiere, the gang deals with the awkward aftermath of an overnight liaison between Sheldon's mother and Leonard's father. Meanwhile, Penny's dysfunctional family is in town for the wedding, including her neurotic mom and drug-dealer broth (more…)

I’ll Watch2151 Watching
Sat Feb 24 9:00pm
The Military Miniaturization(Season 10, Episode 2) TBS

The guys' heads are in a spin when an Air Force bigwig approaches them about their revolutionary gyroscope invention; and Bernadette is upset with Penny after she accidentally leaks a secret to the mom-to-be's coworkers about her being pregnant.

I’ll Watch844 Watching
Sat Feb 24 9:30pm
The Dependence Transcendence(Season 10, Episode 3) TBS

Howard and Leonard are putting in late nights at work and Sheldon is having trouble keeping up; Raj and a pregnant Bernadette spend a day together; and Penny and Amy take in a faculty party.

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Cast & Details See all »

  • Premiered: September 24, 2007
  • Rating: TV-PG
  • Premise: Two nerdy physicists share an apartment and an unlikely friendship with their beautiful neighbor with whom one of them is infatuated. Like the universe after the big bang, the show's popularity expanded, thanks to breakout star Jim Parsons, along with the… (more)

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