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Stan Lee on The Big Bang Theory
Watch The Big Bang Theory Season 3 Episode 16
"The Excelsior Acquisition"
Original Air Date:

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"
Original Air Date:

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"
Original Air Date:

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"
Original Air Date:

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"
Original Air Date:

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"
Original Air Date:

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.

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TBBT Quotes

Penny: Here's a question-- as an alien pretending to be human, are you planning to engage in any post-prom mating rituals with Amy?
Sheldon: There are post-prom mating rituals?
Penny: Not always. Unless your date drives a van with an air mattress, then always.
Sheldon: Well, if it's part of the prom experience, then I'm open to it.
Penny: You're kidding.
Sheldon: I may be an alien, but I have urges.If Amy wants to copulate by firing her eggs into space, well, then, I will happily catch them with the reproductive sac on my upper flermin. I'm not the best at reading facial cues, but I can see that you're a little turned on.

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?