The Big Bang Theory
Smart is the new sexy.
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Episodes
University physicists Leonard and Sheldon know whether to use an integral or a differential to solve the area under a curve. But they don't have a clue about girls. Or dating. Or clothes. Or parties. Or having fun. Or, basically, life. So when a pretty blonde named Penny moves in the apartment across the hall, the guys decide to get an education outside of the classroom. Boys, you have a lot to learn.
1Pilot
23 minSep 24, 2007★ 7.4
Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins showing them that as much as they know about science, they know little about actual living.
2The Big Bran Hypothesis
21 minOct 1, 2007★ 7.5
Leonard volunteers to sign for a package in an attempt to make a good impression on Penny, but when he enlists Sheldon for help, his attempt at chivalry goes terribly awry.
3The Fuzzy Boots Corollary
22 minOct 8, 2007★ 7.2
Leonard asks a woman out after he finds out that Penny is seeing someone.
4The Luminous Fish Effect
21 minOct 15, 2007★ 7.6
Sheldon's getting fired forces him to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.
5The Hamburger Postulate
20 minOct 22, 2007★ 7.6
Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
6The Middle-Earth Paradigm
21 minOct 29, 2007★ 7.6
Penny hosts a Halloween party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
7The Dumpling Paradox
21 minNov 5, 2007★ 7.8
With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team
8The Grasshopper Experiment
20 minNov 12, 2007★ 7.5
Raj's parents set him up on a blind date, but just when he discovers he can talk to her, she shows interest in Sheldon.
9The Cooper-Hofstadter Polarization
19 minMar 17, 2008★ 7.7
When they're invited to present at a physics conference, Sheldon's reluctance to share the credit leads to a tiff between him and Leonard, and Penny's intervention only exacerbates the situation.
10The Loobenfeld Decay
21 minMar 24, 2008★ 7.5
Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's is a bit too complicated for his own good.
11The Pancake Batter Anomaly
22 minMar 31, 2008★ 7.7
With his friends knowing how sour he acts when sick—and avoiding him as a result—Sheldon is nursed by Penny, who hasn't a clue what she's in for.
12The Jerusalem Duality
20 minApr 14, 2008★ 7.3
With Sheldon rattled over meeting Dennis, a 15-year-old physicist who's smarter than he, Leonard helps him look for a way to debunk Dennis's research.
13The Bat Jar Conjecture
22 minApr 21, 2008★ 7.7
Sheldon finds himself booted from the gang's Physics Bowl team and replaced with Leslie, so he forms his own team, hoping to prove he's superior.
14The Nerdvana Annihilation
20 minApr 28, 2008★ 7.5
When delivery of another collectible leads to Penny's lashing out at Leonard, he decides it's time to give up his habit, much to his friends' protestation.
15The Pork Chop Indeterminacy
22 minMay 5, 2008★ 7.5
The rest of the gang fall for Sheldon's twin sister, and Leonard's plan to win her heart is derailed when Sheldon declares he'll be the one to decide who can date her.
16The Peanut Reaction
20 minMay 12, 2008★ 7.6
Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.
17The Tangerine Factor
20 minMay 19, 2008★ 7.9
Penny's break-up spurs Leonard to summon the courage to ask her out, and each goes to Sheldon for advice on their upcoming date.
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