The Big Bang Theory

Season 3

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Season 3
The Big Bang Theory Season 3 DVD
The Big Bang Theory season
Aired from
Sept 21, 2009 - May 24, 2010
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Season 3: 2009-2010

This list of episodes is for the third season of the American sitcom The Big Bang Theory, that was originally aired on CBS from September 21, 2009 to May 24, 2010 over 23 episodes. It has received higher ratings than the previous two seasons with over 15 million viewers.

Season 3 of The Big Bang Theory returned to television in September 21, 2009, and contained 23 episodes.


Episode # Title Original Air Date Directed By Description
301 The Electric Can Opener Fluctuation September 21, 2009 Mark Cendrowski Following his return from the Arctic, Sheldon is very excited over the prospects that his research in the Arctic has yielded, whereas Raj, Howard and Leonard could not believe they spent 3 months in the Arctic and are just glad to be home. Penny is happier than most...More
302 The Jiminy Conjecture September 28, 2009 Mark Cendrowski The episode begins with Sheldon, Howard and Raj in the comic book store, the first two arguing about comics. Leonard arrives and the others are surprised he is not with Penny. As Wolowitz and Koothrappali pry a little more, they discover Leonard is not as happy with the sex...More
303 The Gothowitz Deviation October 5, 2009 Mark Cendrowski After a sexual encounter that results in Penny's bed breaking, Penny and Leonard end up sleeping in Leonard's room, much to Sheldon's dismay. Penny then makes French Toast for breakfast, which does not meet Sheldon's weekly schedule...More
304 The Pirate Solution October 12, 2009 Mark Cendrowski Raj must find a new job or be sent back to India. Sheldon has a solution, which is to allow Raj to work "for" him, rather than work "with" him. Raj reluctantly accepts the offer. With Raj working for Sheldon, it makes Howard lonely, so he tries to stay with Leonard and Penny (even making them...More
305 The Creepy Candy Coating Corollary October 19, 2009 Mark Cendrowski The episode begins as Sheldon enters a trading-card competition upon learning that Wil Wheaton, who he hates for not coming to a sci-fi convention he went to, will also be attending. Raj (Sheldon's partner) and Sheldon make it to the final round against Stuart and Wil. Sheldon...More
306 The Cornhusker Vortex November 2, 2009 Mark Cendrowski Sheldon, who grew up in Texas where it was popular, teaches Leonard how to understand football so that he can try to fit in with Penny's friends. During the game Leonard attempts to demonstrate what he has learned, but his explanations are too clinical, and he fails to fit in. Meanwhile...More
307 The Guitarist Amplification November 9, 2009 Mark Cendrowski An argument between Leonard and Penny proves "inconvenient" to Sheldon. We learn that Sheldon's parents argued a lot when he was growing up, and he doesn't like to hear people arguing at all. Penny had invited a former lover (male guitarist) to stay at her place without talking...More
308 The Adhesive Duck Deficiency November 16, 2009 Mark Cendrowski Leonard is with Rajesh and Howard on a camping trip to watch the Leonid Meteor Shower, but all three succumb to 'magic' cookies they get from Deadhead campers nearby. Hilarity ensues as their minds expand and the munchies...More
309 The Vengeance Formulation November 23, 2009 Mark Cendrowski Wolowitz's new girlfriend, Bernadette, asks him where their relationship is going after their third date. He avoids her for a week, thinking about whether he should "settle" for her or hold out for the impossible (a hot girl from a sci-fi series being interested in him). After a dream in his tub...More
310 The Gorilla Experiment December 7, 2009 Mark Cendrowski Bernadette, in the guys' apartment for dinner, shows an interest in physics, particularly in the work that Leonard is conducting. Leonard offers her the chance to watch him conduct an experiment at work. Wolowitz is jealous of this attention and accuses Leonard of being interested in Bernadette. During...More
311 The Maternal Congruence December 14, 2009 Mark Cendrowski A visit from Leonard's mother, Dr. Beverly Hofstadter (Christine Baranski), delights Sheldon and horrifies Leonard. Penny is upset because Leonard didn't mention his mother's visit to her, but that is nothing compared to when Leonard learns that Sheldon knows more about his own ...More
312 The Psychic Vortex January 11, 2010 Mark Cendrowski Sheldon and Koothrappali attend a university mixer, with Sheldon as Raj's wingman. Sheldon only went because Raj bribed him with a Green Lantern lantern, which Sheldon brought with him to the mixer. They meet Abby (Danica McKellar), who takes a liking to Raj, and her friend Martha (Jen Drohan), who...More
313 The Bozeman Reaction January 18, 2010 Mark Cendrowski When their apartment is robbed and their TV, video games, and computers are stolen, Leonard and Sheldon turn to Howard to create a state-of-the-art security system, which includes an electrified net over the door. Sheldon gets caught in that net and decides he needs to leave Pasadena...More
314 The Einstein Approximation February 1, 2010 Mark Cendrowski Sheldon's search for the answer to a physics problem keeps him up all night for several days and he becomes obsessed with finding the answer. One attempt in a mall ballpit has Leonard jump in and try to get Sheldon out as he pops in and out, shouting "Bazinga!". He then decides that he needs...More
315 The Large Hadron Collision February 8, 2010 Mark Cendrowski Leonard announces that the professor who was invited to a trip to see CERN's Large Hadron Collider in Switzerland was unable to go, so he (Leonard) was designated to be the replacement to go to Switzerland, and he gets to take one guest with him. Sheldon assumes...More
316 The Excelsior Acquisition March 1, 2010 Peter Chakos Sheldon misses his chance to meet comic book legend Stan Lee when he has to attend traffic court after receiving a ticket because of Penny. The ticket was a camera shot of Sheldon running a red light in Penny's car when he was taking her to the hospital in 'The Adhesive Duck Deficiency' from...More
317 The Precious Fragmentation March 8, 2010 Mark Cendrowski On the way to buy Chinese food, the guys see someone that looks like Adam West and follow him to a garage sale, where they buy a box of merchandise for 60 dollars. They ignore Penny's anger at not getting food, and among other things they find a 'Lord of the Rings' ring. Later...More
318 The Pants Alternative March 22, 2010 Mark Cendrowski Sheldon's friends come to his aid when his fear of public speaking stands between him and a coveted award. They offer to be Sheldon's X-Men, which Sheldon changes to his "C-men" because his last name is Cooper. Leonard will help Sheldon psychologically, Penny will shop for...More
319 The Wheaton Recurrence April 12 2010 Mark Cendrowski One night after making love, Leonard surprises Penny by saying "I Love You" but she can only say "thank you" and they both start to think about where their relationship is heading. The next day, Penny and the guys are in a bowling match with Stuart and the gang from the comic book store...More
320 The Spaghetti Catalyst May 3, 2010 Anthony Rich Leonard and Penny have broken up. Sheldon meets Penny in the hall and invites himself to visit her in an hour for spaghetti with hot dogs. Faced with Howard's explanation that, after a break-up, friends of the couple must pick sides...More
321 The Plimpton Stimulation May 10, 2010 Mark Cendrowski Dr. Elizabeth Plimpton (Judy Greer), a cosmological physicist from Princeton University, comes to Caltech for a visit. Sheldon arranges her trip, and offers her to stay in his bed (with Sheldon sleeping on the sofa), rather than a hotel which he perceives as less hospitable. Leonard tries...More
322 The Staircase Implementation May 17, 2010 Mark Cendrowski Leonard tells Penny the story of how he first met Sheldon. The meeting involved an elevator. This episode is mostly in flashback. Leonard starts out with explaining how Sheldon's previous roommate ran out and warned him about Sheldon's idiosyncrasies. Leonard runs into their transvestite...More
323 The Lunar Excitation May 24, 2010 Peter Chakos The guys set up an experiment on the building's roof to bounce a laser off the moon and back to Earth. Leonard thinks Penny might enjoy that, so he goes to get her, only to find she has male company. Penny and her date accompany them to the roof to observe the experiment. However, in the course of doing so, Penny's date demonstrates himself to be extraordinarily dim witted. Later...More

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