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Season 3 – The Big Bang Theory

Play trailer Poster for Season 3 – The Big Bang Theory Sep 2009 Comedy Play Trailer Watchlist
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100% Tomatometer 7 Reviews 92% Popcornmeter 500+ Ratings
Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?
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The Big Bang Theory — Season 3

Critics Reviews

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Maureen Ryan Chicago Tribune Sep 27, 2013
The early laughter is just proof that Big Bang Theory, which is in its third season, is doing many things very right. Go to Full Review Alan Sepinwall Newark Star-Ledger Sep 27, 2013
The Penny/Sheldon interaction was gold, as always. Go to Full Review Ken Tucker Entertainment Weekly Sep 27, 2013
B+
Let's face it, what lifts The Big Bang Theory into frequent excellence is its one constant from the start: the brilliantly nuanced performance of Jim Parsons. Go to Full Review Ross Ruediger Bullz-Eye.com Apr 3, 2020
4.5/5
The writers and producers are playing something of a dangerous game, because some of the other characters, most obviously Leonard, are shrinking into the woodwork. Go to Full Review Tom Conroy Media Life Sep 27, 2013
Somewhere during the run of a good character-driven sitcom like, say, Friends it reaches a point where the characters are so familiar that the jokes come easy but not so familiar that they breed contempt. The Big Bang Theory is right in that sweet spot. Go to Full Review James Chamberlin IGN Sep 27, 2013
8.5/10
Metcalf and the other actors have a relatively easy job in the premiere because the joke writing is so well done. Go to Full Review Read all reviews

Audience Reviews

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matthias S @Thescreenasvor Jul 19, 2026 Season 3 is where The Big Bang Theory really finds its groove. The cast chemistry is fantastic, the friendships feel more natural, and Sheldon steals the show with some of his funniest moments. Leonard and Penny add a nice emotional layer without overshadowing the comedy. Not every episode lands, but the season is consistently funny, charming, and incredibly easy to binge. Definitely one of the show's stronger seasons. See more Michael A @Tomato547 Dec 18, 2025 Season 3 was a good season with great jokes. The Big Bang Theory is one of the best TV shows from the 21th century with nerdy humor and style. See more Alexander K @Movienerd67 Dec 12, 2025 I LOVE THIS SHOW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 1000000000000000000000/10 See more Daniel M @DanyBoy02 Nov 24, 2025 Um elenco muito formidável! See more BRENDEN J @Moviefan109 Apr 9, 2025 The third season of The Big Bang Theory was a really fun season with funny moments. See more Francisco C @RT63765824 Aug 22, 2024 YES, JUST YES, this season is the one that made me obsessed See more Read all reviews
The Big Bang Theory — Season 3

My Rating

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Cast & Crew

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Mark Cendrowski

Director

Anthony Rich

Director

Peter Chakos

Director

Johnny Galecki

Leonard Hofstadter

Jim Parsons

Sheldon Cooper

Kaley Cuoco

Penny

Episodes

Episode 1 Aired Sep 21, 2009 The Electric Can Opener Fluctuation After tampering with Sheldon's Arctic-expedition data, the guys follow him back to Texas, which threatens Leonard's chances for romance with Penny. Details Episode 2 Aired Sep 28, 2009 The Jiminy Conjecture Penny and Leonard try to recover from an awkward hookup; Howard and Sheldon make a high-stakes bet. Details Episode 3 Aired Oct 5, 2009 The Gothowitz Deviation Howard and Raj hit a Goth nightclub to meet women; Sheldon tries chocolate-based behavior modification on Penny. Details Episode 4 Aired Oct 12, 2009 The Pirate Solution Raj faces deportation if he does not find a job; Leonard and Penny deal with Howard as a third wheel. Details Episode 5 Aired Oct 19, 2009 The Creepy Candy Coating Corollary Sheldon seeks revenge on his nemesis, Wil Wheaton; Wolowitz wants Penny to set him up with one of her friends. Details Episode 6 Aired Nov 2, 2009 The Cornhusker Vortex Sheldon teaches Leonard how to understand football; a kite-fighting incident threatens Howard and Raj's friendship. Details Episode 7 Aired Nov 9, 2009 The Guitarist Amplification Sheldon tries to make peace when Leonard and Penny get into an argument. Details Episode 8 Aired Nov 16, 2009 The Adhesive Duck Deficiency Penny is forced to rely on Sheldon when she is injured while Howard, Leonard and Raj are away. Details Episode 9 Aired Nov 23, 2009 The Vengeance Formulation After being humiliated on the radio, Sheldon vows to destroy Kripke; Wolowitz tries not to ruin his new relationship with Bernadette. Details Episode 10 Aired Dec 7, 2009 The Gorilla Experiment Sheldon tries to help Penny understand Leonard's work; Wolowitz gets jealous when Leonard starts hanging out with his new girlfriend. Details Episode 11 Aired Dec 14, 2009 The Maternal Congruence Leonard is horrified when his mother (Christine Baranski) visits. Details Episode 12 Aired Jan 11, 2010 The Psychic Vortex Sheldon and Koothrappali attend a university mixer; Leonard discovers that Penny believes in psychics. Details Episode 13 Aired Jan 18, 2010 The Bozeman Reaction After their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system. Details Episode 14 Aired Feb 1, 2010 The Einstein Approximation Sheldon tries to figure out the answer to a physics problem by working with Penny. Details Episode 15 Aired Feb 8, 2010 The Large Hadron Collision Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day. Details Episode 16 Aired Mar 1, 2010 The Excelsior Acquisition Sheldon ends up in traffic court after getting a ticket because of Penny. Details Episode 17 Aired Mar 8, 2010 The Precious Fragmentation When the guys buy a ring from "The Lord of the Rings" at a garage sale, the item threatens to tear them apart. Details Episode 18 Aired Mar 22, 2010 The Pants Alternative Sheldon's stage fright stands between him and a coveted award. Details Episode 19 Aired Apr 12, 2010 The Wheaton Recurrence Penny and Leonard have a fight that threatens their relationship; Sheldon and Wil Wheaton face off once again. Details Episode 20 Aired May 3, 2010 The Spaghetti Catalyst Sheldon goes to extremes to keep Leonard and Penny happy when they stop speaking to each other. Details Episode 21 Aired May 10, 2010 The Plimpton Stimulation Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention. Details Episode 22 Aired May 17, 2010 The Staircase Implementation Leonard tells Penny about how he met Sheldon and what happened to the elevator. Details Episode 23 Aired May 24, 2010 The Lunar Excitation Raj and Howard set up an online dating profile for Sheldon and find the perfect woman. Details

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The Big Bang Theory — Season 3

The Big Bang Theory View more photos

Season Info

Director
Mark Cendrowski, Anthony Rich, Peter Chakos
Executive Producer
Chuck Lorre, Bill Prady
Screenwriter
Chuck Lorre, Steven Molaro, Lee Aronsohn, Steve Holland, Jim Reynolds, Bill Prady, Richard Rosenstock, Maria Ferrari, David Goetsch, Nicole Lorre, Steve Molaro, Jessica Ambrosetti, Eric Kaplan, Dave Boerger
Network
CBS
Rating
TV-14 (D|L)
Genre
Comedy
Original Language
English
Release Date
Sep 21, 2009
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