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
With his friends on dates, Raj must face his loneliness. Also, Wolowitz is caught in an argument between Bernadette and his mom, even while he’s in space.
Directed by Mark CendrowskiWritten by Chuck Lorre, Jim Reynolds, Eric Kaplan, Steve Holland, Steven Molaro, Maria FerrariGuest stars Kevin Sussman, Carol Ann Susi, Pasha D. Lychnikoff
Episode 2
When Sheldon learns that Penny is thinking about breaking up with Leonard, he tries to intervene. Meanwhile, in space, the other astronauts pick on Howard.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Maria Ferrari, Eric Kaplan, Jim Reynolds, Steven MolaroGuest stars Kevin Sussman, Michael J. Massimino, Pasha D. Lychnikoff, Stephane Nicoli
Episode 3
Amy feels threatened when Sheldon hires a young female assistant, and the pressure of being in space takes its toll on Wolowitz.
Directed by Mark CendrowskiWritten by Steven Molaro, Jim Reynolds, Steve Holland, Chuck Lorre, David Goetsch, Maria FerrariGuest stars Margo Harshman, Pasha D. Lychnikoff
Episode 4
When Wolowitz returns from space, he doesn’t get the hero’s welcome he expected. Meanwhile, Game Night turns into a battle of the sexes.
Directed by Mark CendrowskiWritten by Anthony Del Broccolo, Bill Prady, Chuck Lorre, Eric Kaplan, Jim Reynolds, Steven MolaroGuest stars Kevin Sussman, Carol Ann Susi, Michael J. Massimino, Ken Lerner, Jan Hoag, John Mendoza, Pasha D. Lychnikoff, Howie Mandel
Episode 5
The gang celebrates Halloween at Stuart’s comic book store. Meanwhile, Leonard seduces Penny with science.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Eric Kaplan, Jeremy Howe, Steven Molaro, Maria FerrariGuest stars Kevin Sussman, Buzz Aldrin, Janelle Marra
Episode 6
Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college.
Directed by Mark CendrowskiWritten by Chuck Lorre, Jim Reynolds, Bill Prady, Steve Holland, Eric Kaplan, Steven MolaroGuest stars Stephen Hawking
Episode 7
Wolowitz struggles with moving out of his mother’s house. Meanwhile, Sheldon is caught in the middle of an argument between Amy and Wil Wheaton.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Eric Kaplan, Jim Reynolds, Steven Molaro, Maria FerrariGuest stars LeVar Burton, Carol Ann Susi, Wil Wheaton
Episode 8
Raj and Howard try to to figure out why Sheldon disappears at 2:45 every afternoon; jealousy arises in Penny and Leonard's relationship.
Directed by Mark CendrowskiWritten by Chuck Lorre, Jim Reynolds, Steve Holland, Anthony Del Broccolo, David Goetsch, Steven MolaroGuest stars Margo Harshman, Ryan Cartwright
Episode 9
When the University reassigns Sheldon’s parking spot to Wolowitz, their fight affects the whole gang.
Directed by Peter ChakosWritten by Chuck Lorre, Steve Holland, Eric Kaplan, Adam Faberman, Steven Molaro, Maria FerrariGuest stars William Stanford Davis
Episode 10
When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan a fishing trip.
Directed by Mark CendrowskiWritten by Chuck Lorre, Tara Hernandez, Jim Reynolds, Bill Prady, Eric Kaplan, Steven MolaroGuest stars Casey Sander, Meagen Fay
Episode 11
During a Dungeons and Dragons game, Sheldon revisits Christmas memories; Amy, Penny and Bernadette look for a date for Raj.
Directed by Mark CendrowskiWritten by Chuck Lorre, Jim Reynolds, Eric Kaplan, Steve Holland, Steven Molaro, Maria FerrariGuest stars Kevin Sussman, Dakin Matthews
Episode 12
When Sheldon is accused of sexual harassment, he ends up getting Raj, Leonard and Howard in trouble.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Eric Kaplan, Jim Reynolds, Steven Molaro, Bill PradyGuest stars Margo Harshman, Regina King
Episode 13
As the guys don costumes and go on a road trip to a comic book convention, the ladies decide to stay home and try to interpret a comic book.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Eric Kaplan, Jim Reynolds, Steven Molaro, Maria FerrariGuest stars Kevin Sussman, Matt Battaglia, Angela Sargeant, Craig Gellis, Frank Alvarez, Rick Gifford, Ian Scott Rudolph
Episode 14
Sheldon faces a crisis of confidence when he is forced to work with his nemesis, Barry Kripke; Raj and Howard buy expensive action figures of themselves.
Directed by Mark CendrowskiWritten by Chuck Lorre, Jim Reynolds, Steve Holland, Eric Kaplan, Anthony Del Broccolo, Steven MolaroGuest stars John Ross Bowie
Episode 15
A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements; while Howard is away, Raj helps Mrs. Wolowitz out.
Directed by Mark CendrowskiWritten by Chuck Lorre, Eric Kaplan, Steve Holland, Steven Molaro, Maria Ferrari, Adam FabermanGuest stars Carol Ann Susi
Episode 16
The guys search for a perfect Valentine's Day gift for their significant others; Stuart and Raj host a "lonely people" party at the comic book store.
Directed by Mark CendrowskiWritten by Chuck Lorre, Jim Reynolds, Tara Hernandez, Bill Prady, Steve Holland, Steven MolaroGuest stars Kevin Sussman, Kate Micucci, Margo Harshman, Josh Brener, Briana Cuoco, Jesse Heiman, Ian Scott Rudolph
Episode 17
After a bad date, Koothrappali decides to never leave his apartment; Penny's acting skills impress Sheldon.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Maria Ferrari, David Goetsch, Eric Kaplan, Steven MolaroGuest stars Kevin Sussman, Kate Micucci, Riccardo LeBron
Episode 18
Leonard, Sheldon and Howard give lectures on science to junior high students. The girls ditch work to go to Disneyland. Raj devises a date for Lucy that fixes their social anxiety problems.
Directed by Mark CendrowskiWritten by Chuck Lorre, Jim Reynolds, Eric Kaplan, Steve Holland, Steven Molaro, Maria FerrariGuest stars Kate Micucci, Piper Mackenzie Harris, Diamond White, Dawson Fletcher, Brian Posehn, Seaonna Chanadet, Bryan Stamp
Episode 19
Howard considers whether or not he should open a letter from his father; Penny and Leonard host a "grown-up" cocktail party.
Directed by Anthony RichWritten by Chuck Lorre, Steve Holland, Maria Ferrari, Eric Kaplan, Jim Reynolds, Steven Molaro
Episode 20
The girls get involved when Leonard, Sheldon and Raj compete for tenure at the University.
Directed by Mark CendrowskiWritten by Steven Molaro, Jim Reynolds, Steve Holland, Maria Ferrari, Eric Kaplan, Chuck LorreGuest stars John Ross Bowie, Regina King
Episode 21
Amy tries to help Sheldon get over his compulsive need for closure when one of his favorite TV shows is canceled; Raj discovers a secret about Lucy.
Directed by Mark CendrowskiWritten by Chuck Lorre, Tara Hernandez, Jim Reynolds, Steve Holland, Bill Prady, Steven MolaroGuest stars Kate Micucci
Episode 22
Leonard and Sheldon hire the host (Bob Newhart) of their favorite childhood TV show to perform; Bernadette and Howard run into trouble while dog-sitting for Raj's pet.
Directed by Mark CendrowskiWritten by Chuck Lorre, Steve Holland, Eric Kaplan, Jim Reynolds, Steven Molaro, Maria FerrariGuest stars Troy Winbush, Bob Newhart
Episode 23
A date between Raj and Lucy takes both of them out of their comfort zones. After a trip to Las Vegas goes awry, the girls join in on a Dungeons and Dragons game, which causes Amy and Sheldon to re-evaluate their relationship.
Directed by Anthony RichWritten by Chuck Lorre, Steve Holland, Maria Ferrari, Eric Kaplan, Jim Reynolds, Steven MolaroGuest stars Kate Micucci, David Trice
Episode 24
When Leonard receives an exciting opportunity to work overseas, Penny and Sheldon are thrown for a loop. Raj and Lucy's relationship comes to a crossroad.
Directed by Mark CendrowskiWritten by Steven Molaro, Tara Hernandez, Jim Reynolds, Steve Holland, Chuck Lorre, Maria FerrariGuest stars Kate Micucci
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.
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