The Big Bang Theory

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Big Bang Scene
Watch The Big Bang Theory Season 3 Episode 23
"The Lunar Excitation"
Original Air Date:

Blossom alert! Former sitcom star Mayim Bialik guest stars on the season finale as a potential love interest for Sheldon.

Nerdy Flashback
Watch The Big Bang Theory Season 3 Episode 22
"The Staircase Implementation"
Original Air Date:

Leonard tells Penny the story of how the apartment elevator broke through a series of flashbacks.

Judy Greer on Big Bang Theory
Watch The Big Bang Theory Season 3 Episode 21
"The Plimpton Stimulation"
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Sheldon has a female physicist, Dr. Plimpton (Judy Greer) spend the night at the apartment.

Back from Disney Land
Watch The Big Bang Theory Season 3 Episode 20
"The Spaghetti Catalyst"
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After Penny and Leonard break up, Sheldon goes behind Leonard's back to hang out with Penny.

Nerd Bowl Off
Watch The Big Bang Theory Season 3 Episode 19
"The Wheaton Recurrence"
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Sheldon goes up against his nemesis, Wil Wheaton at the bowling alley while Leonard and Penny have their own fight.

Sheldon Cooper, No Pants
Watch The Big Bang Theory Season 3 Episode 18
"The Pants Alternative"
Original Air Date:

When Sheldon is forced to give an acceptance speech for an award he received, he must overcome his stage freight.

Sheldon as Gollum
Watch The Big Bang Theory Season 3 Episode 17
"The Precious Fragmentation"
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When the guys buy a Lord of the Rings ring from a garage sale, they all begin to covet their precious.

Stan Lee on The Big Bang Theory
Watch The Big Bang Theory Season 3 Episode 16
"The Excelsior Acquisition"
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Sheldon misses his chance to meet comic book creator Stan Lee when he's stuck in traffic court over a ticket that Penny got him.

Leonard Gives Penny Swiss Hints
Watch The Big Bang Theory Season 3 Episode 15
"The Large Hadron Collision"
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When Leonard is giving a plus one to go to Switzerland to see the Large Hadron Collider on Valentine's Day, Sheldon tries to convince Leonard to take him over Penny.

What's the Answer?!?
Watch The Big Bang Theory Season 3 Episode 14
"The Einstein Approximation"
Original Air Date:

Sheldon gets a job at the Cheesecake factory to help his solve a theory; Leonard and Wolowitz steal Raj's idea for a double date.

Sheldon on a Ledge
Watch The Big Bang Theory Season 3 Episode 13
"The Bozeman Reaction"
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When Leonard and Sheldon's apartment gets robbed, their friends help them devise a security system.

Raj and Abby Get Close
Watch The Big Bang Theory Season 3 Episode 12
"The Psychic Vortex"
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Sheldon and Raj attend a university mixer where Raj meets Abby (Danica McKellar); Leonard is upset to find out that Penny believes in psychics.

Beverly Hugs Leonard
Watch The Big Bang Theory Season 3 Episode 11
"The Maternal Congruence"
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Leonard's mother, Beverly (Christine Baranski), is back and Leonard is upset to find out she's getting divorced and told Sheldon, not him.

Wolowitz Gets Jealous
Watch The Big Bang Theory Season 3 Episode 10
"The Gorilla Experiment"
Original Air Date:

Penny seeks Sheldon's help to better understand Leonard's work; Wolowitz gets jealous when Leonard and Bernadette become friends.

Wolowitz and Bernadette Kiss
Watch The Big Bang Theory Season 3 Episode 9
"The Vengeance Formulation"
Original Air Date:

When Kripke embarrasses Sheldon on NPR, he swears revenge; Wolowitz is scared to commit to Bernadette.

Camping with a Computer
Watch The Big Bang Theory Season 3 Episode 8
"The Adhesive Duck Deficiency"
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When Leonard, Raj and Wolowitz go camping, an injured Penny must rely on Sheldon for help.

Sheldon Shows Off Board Game
Watch The Big Bang Theory Season 3 Episode 7
"The Guitarist Amplification"
Original Air Date:

When Penny's musician ex-boyfriend wants to crash on her couch, Leonard and Penny fight and Sheldon tries to stop them.

Leonard in Football Jersey
Watch The Big Bang Theory Season 3 Episode 6
"The Cornhusker Vortex"
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Leonard gets tutored in football by Sheldon; a kite flying mishap causes a fight between Wolowitz and Raj

Penny Plays with the Boys
Watch The Big Bang Theory Season 3 Episode 5
"The Creepy Candy Coating Corollary"
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Sheldon goes up again the Star Trek actor, Wil Wheaton; Wolowitz wants Penny to set him up with one of her friends

Raj Works for Sheldon
Watch The Big Bang Theory Season 3 Episode 4
"The Pirate Solution"
Original Air Date:

Desperate to avoid going back to India, Raj considers a job working for Sheldon; Howard becomes a third wheel to Leonard and Penny

Sheldon Uses Positive Reinforcement
Watch The Big Bang Theory Season 3 Episode 3
"The Gothowitz Deviation"
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Howard takes Raj with him to the Goth dating scene; Sheldon uses chocolate as part of his behavioral experiment on Penny.

The Boys Search for the Cricket
Watch The Big Bang Theory Season 3 Episode 2
"The Jiminy Conjecture"
Original Air Date:

Leonard and Penny try and make things not awkward after their hookup; Sheldon and Wolowitz bet their best comic books on a bet to determine the species of a cricket

The Boys Come for Sheldon
Watch The Big Bang Theory Season 3 Episode 1
"The Electric Can Opener Fluctuation"
Original Air Date:

Sheldon runs to his mother when he learns the gang messed with her arctice expedition's data; the guys go chasing after him with Leonard sacrificing his chance with Penny.

The Big Bang Theory Season 3 Quotes

Sheldon: Why do you have the Chinese character for "soup" tattooed on your right buttock?
Penny: It's not "soup," it's "courage."
Sheldon: No it isn't. But I suppose it does take courage to demonstrate that kind of commitment to soup.
Penny: How'd you see it? You said you wouldn't look.
Sheldon: Sorry. As I told you, the hero always peeks.

Sheldon: Why are you crying?
Penny: Because I'm stupid!
Sheldon: Well that's no reason to cry; one cries because one is sad. For example, I cry because others are stupid and it makes me sad.

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