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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"
Original Air Date:

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"
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.

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TBBT Quotes

Sheldon: Why do people cry at weddings?
Mary: They're practicing for what's coming later.

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.