Pilot

Leonard and Sheldon go to a "High I.Q. sperm bank" but back out while filling out the donation form.

Penny moves into apartment 4B and becomes Leonard and Sheldon's new neighbour. Leonard and Sheldon agree that she is an improvement over their old neighbour, Louie/Louis, who, according to Sheldon, was a 200-pound transvestite with a skin condition.

Penny is invited to their apartment is impressed by their work. Penny is introduced to Sheldon's obsessiveness when she accidentally sits in Sheldon's spot on the couch, and is as well to their lifestyle f.x. Klingon Boggle.

Penny's shower is out of order, so she borrows Leonard and Sheldon's. As she exits the shower only wearing a towel, she is introduced to Howard and Rajesh. Howard hits on Penny, and Rajesh is rendered silent since he can't speak in front of beautiful women.

Penny asks Leonard to pick up her TV from her ex-boyfriend. Sheldon joins him, but Penny's ex-boyfriend refuses to give up the TV, and steals Leonard and Sheldon's pants. Penny feels sorry for Sheldon and Leonard after their incident and decides to take them out to dinner.

Trivia

 * Sheldon wears briefs, Leonard wears boxers.
 * This Episode has The Worst Graphics,Probobly Becuase It Is The Pilot.

Critics
"Penny is a brave new world for Sheldon and Leonard and it’s a fun start to The Big Bang Theory. The show will have to work hard to maintain the delicate balance between geek jokes and real characters. I wish them luck." - The TV Critic's Review

Quotes
(Leonard and Sheldon are about to get Penny's T.V. from her ex-boyfriend, Kurt. They're about to talk to the intercom.)

Kurt: Yeah.

Leonard: Hi, this is Leonard and Sheldon.

Kurt: What do you want?

Leonard: We're here to pick up Penny's T.V.

Kurt: Get Lost.

Sheldon: OK, Well thanks for your time.

(After being refused entry into the building by Kurt, Sheldon and Leonard manage to get into the building and are at Kurt's door. When the two see what Kurt looks like (a big, strong and tough guy), they get nervous.)

Kurt: Yeah.

Leonard: Hi. I'm Leonard and that's Sheldon.

Sheldon: From the intercom.

Kurt: How the hell did you get in the building?

(Leonard is frightened and Lost for words)

Leonard: Uh. Were scientists.

(Kurt looking puzzled, Sheldon whispers to Leonard)

Sheldon: Tell him about our IQ.

(Leonard and Sheldon come out the building without their pants.)

Sheldon: Leonard.

Leonard: Yes?

Sheldon: My mother bought me those pants.

Leonard: I'm sorry.

Sheldon: Your gonna have to call her.

(After Penny has met Howard and Raj)

Penny: So, you guys work with Leonard and Sheldon at the university?

(Raj doesn't answer and just continues to eat)

Penny: I'm sorry? Do you speak English?

Howard: Oh, he speaks English, he just can't speak to women.

Penny: Oh. Why?

Howard: He's kind of a nerd. (starts smooth talking) Juice Box?