SETTING THE SCENE
IN THE SPOTLIGHT
The Big Bang Theory
2007–2019SERIES
The lives of four socially awkward scientists take a wild turn when a beautiful and free-spirited girl moves in next door.
ComedyRomance
THE STORY UNFOLDS
Episodes 17
EPISODE 01Pilot
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.
Sep 25, 2007
EPISODE 02The Big Bran Hypothesis
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.
Oct 2, 2007
EPISODE 03The Fuzzy Boots Corollary
When Leonard learns Penny is seeing someone, he decided to asks a nerdy female co-worker out on a date.
Oct 9, 2007
EPISODE 04The Luminous Fish Effect
When Sheldon gets fired and decides to explore life beyond physics, it's up to Leonard to take drastic action to snap his friend out of his funk.
Oct 16, 2007
EPISODE 05The Hamburger Postulate
Fearing he's wasting his time on Penny, Leonard ends up making a connection with colleague Leslie Winkle.
Oct 23, 2007
EPISODE 06The Middle Earth Paradigm
Penny hosts a Halloween party, that ends up putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
Oct 30, 2007
EPISODE 07The Dumpling Paradox
When Wolowitz seduces one of Penny's friend who then takes over her apartment, Penny sleeps on Leonard and Sheldon's couch. Meanwhile, Penny is recruited to fill in for Howard on the guys' Halo team.
Nov 6, 2007
EPISODE 08The Grasshopper Experiment
Raj's parents set him up on a blind date, but just when he discovers he can talk to his date, she shows interest in Sheldon.
Nov 13, 2007
EPISODE 09The Cooper-Hofstadter Polarization
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.
Mar 18, 2008
EPISODE 10The Loobenfeld Decay
Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's lie is a bit too complicated for his own good.
Mar 25, 2008
EPISODE 11The Pancake Batter Anomaly
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.
Apr 1, 2008
EPISODE 12The Jerusalem Duality
When Sheldon meets a 15-year-old physicist prodigy, he's rattled and threatened and Leonard tries to help him look for ways to debunk his research.
Apr 15, 2008
EPISODE 13The Bat Jar Conjecture
Sheldon finds himself booted from the gang's Physics Bowl team and replaced by Leslie Winkle, so he forms his own team, hoping to prove he's superior.
Apr 22, 2008
EPISODE 14The Nerdvana Annihilation
When the guys buy a time machine prop from a classic 1960 movie, Penny lashes out at Leonard and he decides it's time to give up his habit, much to his friends' protestation.
Apr 29, 2008
EPISODE 15The Pork Chop Indeterminacy
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.
May 6, 2008
EPISODE 16The Peanut Reaction
Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track. Meanwhile, Howard makes a terrible sacrifice for the sake of the surprise.
May 13, 2008
EPISODE 17The Tangerine Factor
Penny's break-up spurs Leonard to summon up the courage to ask her out, and each head to Sheldon for advice on their upcoming date.
May 20, 2008
