Episode 1
Pilot
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.
Where to watch The Big Bang Theory
TV series
The Big Bang Theory
2007TV-PG12 seasons7.9 / 10
Smart is the new sexy.
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Streaming, rental and purchase options
Where to watch in United States
Checked Jul 22, 2026
The Big Bang Theory is available to stream on DirecTV On Demand, HBO (Via Hulu), HBO Max, Max (Via Amazon Prime), and YouTube TV in United States. You can also rent or buy it from Google Play, Amazon, Apple TV, and Fandango at Home. Use the direct links below to open the provider.
Stream
Synopsis
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Season 1 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
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.
Where to watch The Big Bang Theory
Episode 3
The Fuzzy Boots Corollary
Leonard asks a woman out after he finds out that Penny is seeing someone.
Where to watch The Big Bang Theory
Episode 4
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.
Where to watch The Big Bang Theory
Episode 5
The Hamburger Postulate
Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
Where to watch The Big Bang Theory
Episode 6
The Middle-Earth Paradigm
Penny hosts a Halloween party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
Where to watch The Big Bang Theory
Episode 7
The Dumpling Paradox
With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team
Where to watch The Big Bang Theory
Episode 8
The Grasshopper Experiment
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.
Where to watch The Big Bang Theory
Episode 9
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 him and Leonard, and Penny's intervention only exacerbates the situation.
Where to watch The Big Bang Theory
Episode 10
The Loobenfeld Decay
Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's is a bit too complicated for his own good.
Where to watch The Big Bang Theory
Episode 11
The 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.
Where to watch The Big Bang Theory
Episode 12
The Jerusalem Duality
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.
Where to watch The Big Bang Theory
Episode 13
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.
Where to watch The Big Bang Theory
Episode 14
The Nerdvana Annihilation
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.
Where to watch The Big Bang Theory
Episode 15
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.
Where to watch The Big Bang Theory
Episode 16
The Peanut Reaction
Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.
Where to watch The Big Bang Theory
Episode 17
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.
Where to watch The Big Bang TheoryEpisode information updated Jul 22, 2026
More about The Big Bang Theory
Cast
Johnny GaleckiLeonard Hofstadter
Jim ParsonsSheldon Cooper
Kaley CuocoPenny
Simon HelbergHoward Wolowitz
Kunal NayyarRajesh Koothrappali
Melissa RauchBernadette Rostenkowski
Mayim BialikAmy Farrah Fowler
Kevin SussmanStuart BloomCredits
- Created by
- Chuck Lorre, Bill Prady
- Written by
- Lee Aronsohn, Jim Reynolds, Chuck Lorre, Steven Molaro, Bill Prady, Eric Kaplan, Steve Holland, David Goetsch, Tara Hernandez, Andy Gordon, Maria Ferrari, Richard A. Rosenstock, Jeremy Howe, Anthony Del Broccolo, Adam Faberman, Steven Molaro
Production details
- Status
- Ended
- Series type
- Scripted
- Episodes
- 279
- Original language
- English
Networks & production
CBSUnited States
Chuck Lorre ProductionsUnited States
Warner Bros. TelevisionUnited States
Themes
friendsgeeknerdscientistsitcom
You may also like
More shows like The Big Bang Theory.
Available nowCommunity
Similar story and audience
Available nowCoupling
Similar story and audience
Available nowThe IT Crowd
Similar story and audience
Available nowHot in Cleveland
Similar story and audience
Available nowNew Girl
Similar story and audience
Available nowThat's So Raven
Similar story and audience