TV series
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
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.
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Choose an episode, then use the watch options above for the show.
Episode 1
Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a robotic arm.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, David Goetsch, Eric Kaplan, Steven Molaro, Lee AronsohnGuest stars Vernee Watson, Carol Ann Susi
Episode 2
Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.
Directed by Mark CendrowskiWritten by Jim Reynolds, Bill Prady, Steve Holland, Chuck Lorre, Steven Molaro, Lee AronsohnGuest stars Steve Wozniak
Episode 3
The guys are concerned as Sheldon searches for an alternative to human companionship.
Directed by Mark CendrowskiWritten by Chuck Lorre, Bill Prady, Jim Reynolds, Steven Molaro, Maria Ferrari, Lee AronsohnGuest stars Laurie Metcalf
Episode 4
An embarrassing secret of Wolowitz's comes to light, while Sheldon and Raj have a small war at work.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steven Molaro, Adam Faberman, Maria Ferrari, Bill Prady, Lee AronsohnGuest stars George Takei, Carol Ann Susi, Katee Sackhoff
Episode 5
Leonard realizes he’s the only one without a girlfriend, while Sheldon wants to get rid of his.
Directed by Mark CendrowskiWritten by Steve Holland, Bill Prady, Chuck Lorre, David Goetsch, Steven Molaro, Lee AronsohnGuest stars Kevin Sussman, Carol Ann Susi, Annie O'Donnell, Charlotte Newhouse
Episode 6
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steven Molaro, Eric Kaplan, Maria Ferrari, Bill Prady, Lee AronsohnGuest stars Aarti Mann
Episode 7
Sheldon's answers during an FBI interview put Wolowitz's security clearance in jeopardy.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Maria Ferrari, Steven Molaro, Bill Prady, Lee AronsohnGuest stars Eliza Dushku, Neil deGrasse Tyson
Episode 8
While the guys camp in line for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Bill Prady, Jim Reynolds, Steven Molaro, Lee AronsohnGuest stars Eric André, Wil Wheaton
Episode 9
Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.
Directed by Mark CendrowskiWritten by Chuck Lorre, David Goetsch, Jim Reynolds, Steven Molaro, Bill Prady, Lee AronsohnGuest stars Keith Carradine
Episode 10
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steven Molaro, Jim Reynolds, Steve Holland, Maria Ferrari, Lee AronsohnGuest stars Brian Thomas Smith
Episode 11
The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a costume contest as the Justice League.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Maria Ferrari, Steven Molaro, Bill Prady, Lee AronsohnGuest stars Kevin Sussman, Brian Thomas Smith
Episode 12
Leonard's idea for a smartphone app derails his friendship with Sheldon.
Directed by Mark CendrowskiWritten by Chuck Lorre, Maria Ferrari, Eric Kaplan, Steven Molaro, Bill Prady, Lee Aronsohn
Episode 13
Bernadette runs into her ex-boyfriend while attending a science event with Wolowitz.
Directed by Anthony RichWritten by Chuck Lorre, Steve Holland, Bill Prady, David Goetsch, Steven Molaro, Lee AronsohnGuest stars Rick Fox, Ed Lieberman
Episode 14
Hoping it will make him a better teacher, Sheldon has Penny give him acting lessons. Raj has fantasies about a friend's girlfriend.
Directed by Mark CendrowskiWritten by Chuck Lorre, Jim Reynolds, Steven Molaro, Maria Ferrari, Bill Prady, Lee Aronsohn
Episode 15
A wealthy donor to the university makes Leonard consider how far he's willing to go for the sake of science.
Directed by Mark CendrowskiWritten by Steve Holland, Bill Prady, Chuck Lorre, David Goetsch, Eric Kaplan, Lee AronsohnGuest stars Jessica Walter, Joshua Malina
Episode 16
As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.
Directed by Mark CendrowskiWritten by Chuck Lorre, Jim Reynolds, David Goetsch, Steven Molaro, Bill Prady, Lee AronsohnGuest stars Aarti Mann, Carol Ann Susi
Episode 17
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
Directed by Mark CendrowskiWritten by Jim Reynolds, Maria Ferrari, Bill Prady, Chuck Lorre, David Goetsch, Steven MolaroGuest stars Kevin Sussman, Aarti Mann, John Ross Bowie, LeVar Burton, Brian Thomas Smith
Episode 18
Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating Priya may make it impossible to continue being friends with Penny.
Directed by Mark CendrowskiWritten by Bill Prady, Steve Holland, Chuck Lorre, Eric Kaplan, Steven Molaro, Eddie GorodetskyGuest stars Aarti Mann
Episode 19
Sheldon's online-game account is hacked by Todd Zarnecki, who then proceeds to steal all his items prompting the guys to go on a quest to retrieve them. Penny, Bernadette and Amy discuss how Penny groomed Leonard to be willing to try various things and more adventurous boyfriend... for some other woman — Priya.
Directed by Peter ChakosWritten by Chuck Lorre, Steven Molaro, Jim Reynolds, Maria Ferrari, David Goetsch, Bill PradyGuest stars Aarti Mann, Carol Ann Susi, Lanny Joon, Chris Reed
Episode 20
Sheldon and Amy decide to start several rumors about the others as a test. Meanwhile, Howard takes his relationship with Bernadette to even higher level.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Eric Kaplan, Steven Molaro, Bill Prady, Eddie GorodetskyGuest stars Alice Amter, Aarti Mann, Brian George, Brian Greene
Episode 21
When Leonard spends too much time in the shower with Priya, Sheldon charges Leonard with two violations of the roommate agreement. However, before he can get too far, Priya uses her skills as a lawyer to nullify the charges due to the agreement's vague wording, much to Sheldon's dismay. When the guys take advantage of Priya's skills in order to eat Greek food on pizza night, Sheldon goes to Penny, who invites him to a girls' night out with Amy and Bernadette, which Sheldon agrees to after Penny mentions that they may be talking trash about Priya. After the girls drink some cocktails, they decide to take Sheldon dancing, which Sheldon reluctantly goes along with. After dancing, Sheldon takes an intoxicated Amy back to her apartment and as well as talking about Priya, meets a monkey who is addicted to smoking cigarettes. Amy tells Sheldon not to give in to Priya's law skills, before kissing him and going to her bathroom to vomit.
Directed by Mark CendrowskiWritten by Bill Prady, Chuck Lorre, David Goetsch, Eric Kaplan, Steven Molaro, Eddie GorodetskyGuest stars Aarti Mann, Arnold Chun, Tom Yi
Episode 22
Raj attempts to cure his social anxiety disorder while Penny uses Bernadette to spy on Leonard and his girlfriend.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steven Molaro, Eric Kaplan, Maria Ferrari, Bill Prady, Eddie GorodetskyGuest stars Aarti Mann, Tiffany Dupont, Whitney Avalon
Episode 23
When Howard finally breaks the news to his mom that he's engaged to Bernadette, it lands her in the hospital.
Directed by Howard MurrayWritten by Steve Holland, Eric Kaplan, Bill Prady, Chuck Lorre, Jim Reynolds, Steven MolaroGuest stars Aarti Mann, Phil Abrams, Carol Ann Susi, Sharon Omi
Episode 24
When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard swap places and Penny does something she's regrets.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steven Molaro, Jim Reynolds, Eric Kaplan, Bill Prady, Eddie GorodetskyGuest stars Alice Amter, Aarti Mann, Brian George, Carol Ann Susi
Episode information updated Jul 24, 2026
Johnny GaleckiLeonard Hofstadter
Jim ParsonsSheldon Cooper
Kaley CuocoPenny
Simon HelbergHoward Wolowitz
Kunal NayyarRajesh Koothrappali
Melissa RauchBernadette Rostenkowski
Mayim BialikAmy Farrah Fowler
Kevin SussmanStuart Bloom
CBSUnited States
Chuck Lorre ProductionsUnited States
Warner Bros. TelevisionUnited StatesMore shows like The Big Bang Theory.
Available nowSimilar story and audience
Available nowSimilar story and audience
Available nowSimilar story and audience
Available nowSimilar story and audience
Available nowSimilar story and audience
Available nowSimilar story and audience
