The Big Bang Theory
Season 1

s01e01 / Pilot

25th Sep '07 - 12:00am

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.

35941 have watched this episode

s01e02 / The Big Bran Hypothesis

2nd Oct '07 - 12:00am
The 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.

35895 have watched this episode

s01e03 / The Fuzzy Boots Corollary

9th Oct '07 - 12:00am
The Fuzzy Boots Corollary

Leonard asks a woman out after he finds out that Penny is seeing someone.

35864 have watched this episode

s01e04 / The Luminous Fish Effect

16th Oct '07 - 12:00am
The Luminous Fish Effect

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.

35851 have watched this episode

s01e05 / The Hamburger Postulate

23rd Oct '07 - 12:00am
The Hamburger Postulate

Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie. Meanwhile, Sheldon frets over a change to his hamburger routine.

35827 have watched this episode

s01e06 / The Middle Earth Paradigm

30th Oct '07 - 12:00am
The Middle Earth Paradigm

Penny hosts a Halloween party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.

35816 have watched this episode

s01e07 / The Dumpling Paradox

6th Nov '07 - 1:00am
The Dumpling Paradox

With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team.

35807 have watched this episode

s01e08 / The Grasshopper Experiment

13th Nov '07 - 1:00am
The Grasshopper Experiment

Raj's parents set him up on a blind date, and when he discovers he can talk to her, she shows interest in Sheldon.

35797 have watched this episode

s01e09 / The Cooper-Hofstadter Polarization

18th Mar '08 - 12:00am
The 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 he and Leonard, and Penny's intervention only exacerbates the situation.

35783 have watched this episode

s01e10 / The Loobenfeld Decay

25th Mar '08 - 12:00am
The Loobenfeld Decay

Leonard and Sheldon each lie to avoid hearing Penny sing in a production of Rent. However, Sheldon's lie becomes a bit too complicated for its own good.

35774 have watched this episode

s01e11 / The Pancake Batter Anomaly

1st Apr '08 - 12:00am
The Pancake Batter Anomaly

With his friends knowing how sour he acts when sick—and avoiding him as a result—Sheldon is nursed for by Penny, who hasn't a clue what she's in for.

35765 have watched this episode

s01e12 / The Jerusalem Duality

15th Apr '08 - 12:00am
The Jerusalem Duality

With Sheldon rattled and impossible to be around after meeting Dennis, a 15-year-old physicist who's smarter than he, the rest of the guys search for a way to eliminate the threat.

35759 have watched this episode

s01e13 / The Bat Jar Conjecture

22nd Apr '08 - 12:00am
The Bat Jar Conjecture

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.

35751 have watched this episode

s01e14 / The Nerdvana Annihilation

29th Apr '08 - 12:00am
The Nerdvana Annihilation

When the delivery of a full-size prop of 1960's The Time Machine makes Penny miss work, she scolds Leonard about his sci-fi collectibles. He decides it's time to give up such childish pursuits.

35745 have watched this episode

s01e15 / The Pork Chop Indeterminacy

6th May '08 - 12:00am
The 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.

35745 have watched this episode

s01e16 / The Peanut Reaction

13th May '08 - 12:00am
The Peanut Reaction

Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.

35739 have watched this episode

s01e17 / The Tangerine Factor

20th May '08 - 12:00am
The Tangerine Factor

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.

35740 have watched this episode
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