Last episode
The Stockholm Syndrome
s12e24 · 2019-05-17
Ended · US
The Big Bang Theory
CBS Scripted
What it is
The Big Bang Theory is a comedy about brilliant physicists, Leonard and Sheldon, who are the kind of "beautiful minds" that understand how the universe works. But none of that genius helps them interact with people, especially women. All this begins to change when a free-spirited beauty named Penny moves in next door. Sheldon, Leonard's roommate, is quite content spending his nights playing Klingon Boggle with their socially dysfunctional friends, fellow Cal Tech scientists Wolowitz and Koothrappali. However, Leonard sees in Penny a whole new universe of possibilities... including love.
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17 this season · 279 totals01e01 Pilot 2007-09-25 00:30
Pilot
Is a comedy about brilliant physicists, Leonard and Sheldon, who are the kind of 'beautiful minds' that understand how the universe works. But none of that genius helps them interact with people, especially women. All this begins to change when a free-spirited beauty named Penny moves in next door. Sheldon, Leonard's roommate, is quite content spending his nights playing Klingon Boggle with their socially dysfunctional friends, fellow Cal Tech scientists Wolowitz and Koothrappali. However, Leonard sees in Penny a whole new universe of possibilities... including love.
s01e02 The Big Bran Hypothesis 2007-10-02 00:30
The Big Bran Hypothesis
Leonard volunteers to sign for a package, hoping to make a good impression on Penny. When he enlists the help of his obsessive-compulsive roommate, Sheldon, his attempt at chivalry goes horribly awry.
s01e03 The Fuzzy Boots Corollary 2007-10-09 00:30
The Fuzzy Boots Corollary
Leonard is bummed to learn that his crush, Penny, is seeing someone, so encouraged by his friends and fellow scientists, Leonard actually summons the nerve to ask a woman out on a date.
s01e04 The Luminous Fish Effect 2007-10-16 00:30
The Luminous Fish Effect
When Sheldon gets fired, he explores life beyond physics, but his initial thrill of shopping with Penny devolves over time to him weaving ponchos as a shut-in, forcing Leonard to call on Sheldon's mother.
s01e05 The Hamburger Postulate 2007-10-23 00:30
The Hamburger Postulate
After sensing his pursuit of Penny isn't going anywhere, Leonard agrees to an unexpected sexual encounter with fellow scientist Leslie Winkle.
s01e06 The Middle-Earth Paradigm 2007-10-30 00:30
The Middle-Earth Paradigm
Leonard, Sheldon, Wolowitz and Koothrappali undertake a challenging and risky experiment-attending the Halloween party being thrown by their hot neighbor, Penny.
s01e07 The Dumpling Paradox 2007-11-06 01:30
The Dumpling Paradox
When Wolowitz seduces Penny's friend and takes over her apartment, Penny sleeps on Leonard and Sheldon's couch. With Wolowitz preoccupied, the guys discover they are without a fourth member of their group and in desperation, they ask Penny to join their Halo team.
s01e08 The Grasshopper Experiment 2007-11-13 01:30
The Grasshopper Experiment
Koothrappali is overwhelmed after his parents arrange a blind date, but he discovers he actually can talk to the opposite sex after a few drinks; however, complications set in when his beautiful date is more interested in Sheldon.
s01e09 The Cooper-Hofstadter Polarization 2008-03-18 00:00
The Cooper-Hofstadter Polarization
When Sheldon and Leonard are invited to present their joint findings at a physics conference, Sheldon refuses, and Penny steps in to mediate, only deepening the rift between the two best friends.
s01e10 The Loobenfeld Decay 2008-03-25 00:00
The Loobenfeld Decay
After hearing Penny sing, Leonard lies to avoid seeing her perform, but Sheldon takes it one step further with a more elaborate lie that leads to the appearance of his non-existent cousin.
s01e11 The Pancake Batter Anomaly 2008-04-01 00:00
The Pancake Batter Anomaly
When Sheldon gets sick, Leonard and the boys know what's in store and avoid him like the plague, leaving an unsuspecting Penny to nurse the world's worst patient back to health.
s01e12 The Jerusalem Duality 2008-04-15 00:00
The Jerusalem Duality
When Leonard and Sheldon meet a 15-year-old physics prodigy, Sheldon is distraught that this boy genius is younger and smarter, so in an attempt to restore his sense of purpose, the boys come up with a solution to derail Dennis' research.
s01e13 The Bat Jar Conjecture 2008-04-22 00:00
The Bat Jar Conjecture
Since Sheldon's only focus is to prove his mental superiority while preparing for the Physics Bowl, the guys kick him off the team and enlist his nemesis Leslie Winkle.
s01e14 The Nerdvana Annihilation 2008-04-29 00:00
The Nerdvana Annihilation
When Leonard and the guys buy a time machine prop from a classic 1960 movie, its arrival creates problems for Penny and she tells the boys that their obsession with comics and toys is 'pathetic'.
s01e15 The Pork Chop Indeterminacy 2008-05-06 00:00
The Pork Chop Indeterminacy
When Leonard, Wolowitz, and Koothrappali all become smitten with Sheldon's twin sister, Leonard devises a plan to eliminate his rivals, however, it backfires when Sheldon declares he will decide whom his sister dates.
s01e16 The Peanut Reaction 2008-05-13 00:00
The Peanut Reaction
When Penny learns that Leonard doesn't celebrate birthdays, she attempts to throw him a surprise party, but is sidetracked by Sheldon who unexpectedly gets to live out one of his greatest fantasies at an electronics store.
s01e17 The Tangerine Factor 2008-05-20 00:00
The Tangerine Factor
When Leonard asks Penny out on a date and she says yes, they each seek the 'wisdom' of reluctant advisor.