Sat Aug 29 8:00pm
The Work Song Nanocluster(Season 2, Episode 18) TBS

Penny starts a hair-product business that suffers when her friends, particularly Sheldon, become involved.

Sat Aug 29 8:30pm
The Dead Hooker Juxtaposition(Season 2, Episode 19) TBS

Penny develops a rivalry with a pretty woman who moves into the building.

Sat Aug 29 9:00pm
The Hofstadter Isotope(Season 2, Episode 20) TBS

Penny is romanced by a friend of the guys' while at a comic-book store. Meanwhile, Leonard and Wolowitz search for love at a bar's ladies' night.

Sat Aug 29 9:30pm
The Vegas Renormalization(Season 2, Episode 21) TBS

Leonard, Koothrappali and Wolowitz go to Las Vegas, and Sheldon is locked out of the apartment, leaving him no choice but to stay with Penny.

Sat Aug 29 10:00pm
The Classified Materials Turbulence(Season 2, Episode 22) TBS

While on a date with Stuart, Penny makes an unexpected discovery regarding Leonard; and Wolowitz asks for his friends' help on his NASA project when he uncovers a design flaw.

Sat Aug 29 10:30pm
The Monopolar Expedition(Season 2, Episode 23) TBS

In the second-season finale, Leonard gets ready for a three-month long science trip, and he and Penny come to terms with their feelings for each other.

Tue Sep 1 8:00pm
The Electric Can Opener Fluctuation(Season 3, Episode 1) TBS

In the third-season opener, Sheldon feels betrayed when his friends alter his arctic-expedition data, so he takes off for Texas. The guys follow him, which kills Leonard's chance for a romantic meeting with Penny.

Tue Sep 1 8:30pm
The Jiminy Conjecture(Season 3, Episode 2) TBS

Sheldon and Howard consult an entomologist (Lewis Black) to help settle a bet---with their favorite comic books at stake---regarding a species of cricket. Meanwhile, Leonard and Penny try to figure out what's next after an awkward first attempt at intimacy (more…)

Tue Sep 1 9:00pm
The Gothowitz Deviation(Season 3, Episode 3) TBS

Sheldon tries to change Penny through behavior modification, using chocolate as motivation. Meanwhile, Howard and Raj try to pick up women at a Goth nightclub.

Tue Sep 1 9:30pm
The Pirate Solution(Season 3, Episode 4) TBS

Raj needs to find a new job or he will be sent back to India, so Sheldon hires Raj to work for him. Meanwhile, Leonard and Penny need to explain the "three's company" concept to Howard.

Tue Sep 1 10:00pm
The Creepy Candy Coating Corollary(Season 3, Episode 5) TBS

Sheldon enters a trading-card competition when he hears Wil Wheaton (in a cameo), for whom he harbors resentment, is also participating. Meanwhile, Wolowitz asks Penny to set him up with one of her friends.

Tue Sep 1 10:30pm
The Cornhusker Vortex(Season 3, Episode 6) TBS

Sheldon tries to teach Leonard the fundamentals of football, while Raj and Howard quarrel over an incident involving kites.

Wed Sep 2 8:00pm
The Guitarist Amplification(Season 3, Episode 7) TBS

Leonard and Penny fight, and Sheldon mediates.

Wed Sep 2 8:30pm
The Adhesive Duck Deficiency(Season 3, Episode 8) TBS

After the guys, except for Sheldon, go camping, Penny is injured and left with only Sheldon to come to her rescue.

Wed Sep 2 9:00pm
The Vengeance Formulation(Season 3, Episode 9) TBS

Sheldon is humiliated on National Public Radio and vows vengeance on Kripke; and Wolowitz begins a relationship with Katee Sackhoff, who appears in a cameo. Ira Flatow also makes a cameo appearance.

Wed Sep 2 9:30pm
The Gorilla Experiment(Season 3, Episode 10) TBS

Sheldon tries to teach Penny physics so she'll understand Leonard's work; Wolowitz is jealous when Leonard bonds with his girlfriend.

Wed Sep 2 10:00pm
The Maternal Congruence(Season 3, Episode 11) TBS

Leonard's mother (Christine Baranski) visits, which pleases Sheldon but upsets Leonard.

Wed Sep 2 10:30pm
The Psychic Vortex(Season 3, Episode 12) TBS

Sheldon helps Koothrappali pick up women at a university mixer; and Leonard is shocked to learn that Penny believes in psychics. Abby: Danica McKellar.

Thu Sep 3 8:00pm
The Skywalker Incursion(Season 8, Episode 19) CBS

A speaking engagement at UC Berkeley puts Leonard and Sheldon in a galaxy not too far, far away from their idol George Lucas' Skywalker Ranch, and they consider dropping by. Meanwhile, Howard and Bernadette argue over what to do with his Doctor Who TARDIS (more…)

Thu Sep 3 9:30pm
The Bozeman Reaction(Season 3, Episode 13) TBS

Leonard and Sheldon's apartment is robbed, so they create an elaborate security system with the help of their friends.

Thu Sep 3 10:00pm
The Einstein Approximation(Season 3, Episode 14) TBS

Newton had his apple. Sheldon has cheesecake. An impasse in his work leads Sheldon to get a job working with Penny at a restaurant known for that dessert.

Thu Sep 3 10:30pm
The Large Hadron Collision(Season 3, Episode 15) TBS

Leonard is only allowed to bring one guest for his trip to the CERN science complex in Switzerland, and he's forced to choose between Sheldon and Penny.

Sat Sep 5 8:00pm
The Excelsior Acquisition(Season 3, Episode 16) TBS

Sheldon misses an opportunity to meet comics mogul Stan Lee, who appears in a cameo, when he has to go to traffic court after getting a ticket because of Penny.

Sat Sep 5 8:30pm
The Precious Fragmentation(Season 3, Episode 17) TBS

The guys go to a garage sale and find a ring from "The Lord of the Rings" film, and the rare find threatens their friendship.

Show More

Next On TVSee all »

Cast & Details See all »

  • Premiered: September 24, 2007
  • Rating: TV-PG
  • User Rating:4.58 out of 5 (8,996 ratings)
  • Your Rating:
  • 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)

Show More »

Shop