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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"
Original Air Date:

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"
Original Air Date:

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"
Original Air Date:

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.

Leonard in a Snuggie
Watch The Big Bang Theory Season 2 Episode 23
"The Monopolar Expedition"
Original Air Date:

When Sheldon gets news he's going to the North Pole on a NSF expedition, he invites the guys as his group.

Sheldon is Angry at Stuart
Watch The Big Bang Theory Season 2 Episode 22
"The Classified Materials Turbulence"
Original Air Date:

Howard enlists the help of the boys in order to fix his space toilet. Stuart and Penny go on their second date.

Raj and a Prostitute
Watch The Big Bang Theory Season 2 Episode 21
"The Vegas Renormalization"
Original Air Date:

When Wolowitz gets dumped by Leslie, Raj and Leonard take him to Las Vegas to get over his breakup. Meanwhile, Sheldon gets locked out of the apartment and has to crash at Penny's.

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TBBT Quotes

Penny, there's only one cookie with something in the middle that solves life's problems, and that's an Oreo. Or a Nutter Butter, if you're in a pinch.

Sheldon

Leonard: Hi. I'm Leonard. You are beautiful. You pop, sparkle and buzz electric. I'm going to pick you up at eight, show you a night you will never forget.
Raj: Where are we going?