The Big Bang Theory
The Big Bang Theory
The Big Bang Theory
Smart is the new sexy.
Comedy
79
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Overview
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Status: Ended
First Air Date: 2007-09-24
Runtime: 0h 22m
Director: Unknown
Writer: Unknown
Top Cast
Johnny Galecki
Johnny Galecki
Leonard Hofstadter
Jim Parsons
Jim Parsons
Sheldon Cooper
Kaley Cuoco
Kaley Cuoco
Penny
Simon Helberg
Simon Helberg
Howard Wolowitz
Kunal Nayyar
Kunal Nayyar
Rajesh Koothrappali
Melissa Rauch
Melissa Rauch
Bernadette Rostenkowski
Mayim Bialik
Mayim Bialik
Amy Farrah Fowler
Official Videos
Season 1 Episode 1 Clip
Season 1 Episode 1 Clip
Episodes - Season 1
Pilot
Pilot
Episode 1
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.
The Big Bran Hypothesis
The Big Bran Hypothesis
Episode 2
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.
The Fuzzy Boots Corollary
The Fuzzy Boots Corollary
Episode 3
Leonard asks a woman out after he finds out that Penny is seeing someone.
The Luminous Fish Effect
The Luminous Fish Effect
Episode 4
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.
The Hamburger Postulate
The Hamburger Postulate
Episode 5
Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
The Middle-Earth Paradigm
The Middle-Earth Paradigm
Episode 6
Penny hosts a Halloween party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
The Dumpling Paradox
The Dumpling Paradox
Episode 7
With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team
The Grasshopper Experiment
The Grasshopper Experiment
Episode 8
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.
The Cooper-Hofstadter Polarization
The Cooper-Hofstadter Polarization
Episode 9
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.
The Loobenfeld Decay
The Loobenfeld Decay
Episode 10
Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's is a bit too complicated for his own good.
The Pancake Batter Anomaly
The Pancake Batter Anomaly
Episode 11
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.
The Jerusalem Duality
The Jerusalem Duality
Episode 12
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.
The Bat Jar Conjecture
The Bat Jar Conjecture
Episode 13
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.
The Nerdvana Annihilation
The Nerdvana Annihilation
Episode 14
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.
The Pork Chop Indeterminacy
The Pork Chop Indeterminacy
Episode 15
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.
The Peanut Reaction
The Peanut Reaction
Episode 16
Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.
The Tangerine Factor
The Tangerine Factor
Episode 17
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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