The Big Bang Theory

Season 1

TV-PG

59%84%

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.

Where to Watch Season 1

17 Episodes

Pilot
E1
PilotBrilliant 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.
The Big Bran Hypothesis
E2
The Big Bran HypothesisLeonard 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.
The Fuzzy Boots Corollary
E3
The Fuzzy Boots CorollaryLeonard asks a woman out after he finds out that Penny is seeing someone.
The Luminous Fish Effect
E4
The Luminous Fish EffectSheldon'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.
The Hamburger Postulate
E5
The Hamburger PostulateFearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
The Middle-Earth Paradigm
E6
The Middle-Earth ParadigmPenny hosts a Halloween party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
The Dumpling Paradox
E7
The Dumpling ParadoxWith Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team
The Grasshopper Experiment
E8
The Grasshopper ExperimentRaj's parents set him up on a blind date, but just when he discovers he can talk to her, she shows interest in Sheldon.
The Cooper-Hofstadter Polarization
E9
The Cooper-Hofstadter PolarizationWhen 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.
The Loobenfeld Decay
E10
The Loobenfeld DecayLeonard lies to Penny so he and Sheldon can get out of watching her perform, but Sheldon believes that the lie has too many loose ends, so he comes up with a new, unnecessarily complex one to replace it.
The Pancake Batter Anomaly
E11
The Pancake Batter AnomalyWith 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.
The Jerusalem Duality
E12
The Jerusalem DualityWith 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.
The Bat Jar Conjecture
E13
The Bat Jar ConjectureSheldon 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.
The Nerdvana Annihilation
E14
The Nerdvana AnnihilationLeonard buys a replica time machine online. As the boys move it into the apartment they accidentally make Penny late for work causing her to lash out at Leonard for his nerdy ways. Upset, Leonard decides to get rid of all his 'nerdmabelia' and the guys try to convince him not to.
The Pork Chop Indeterminacy
E15
The Pork Chop IndeterminacyThe 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.
The Peanut Reaction
E16
The Peanut ReactionPenny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.
The Tangerine Factor
E17
The Tangerine FactorPenny's break-up spurs Leonard to summon the courage to ask her out, and each goes to Sheldon for advice on their upcoming date.