Pilot

Leonard and Sheldon goes to a "High I.Q. sperm bank" but gets cold feet while filling out the donation form.

Penny moves into apartment 4B and becomes Lonard and Sheldons new neighbour. Leonard and Sheldon agrees that she is an improvement over their old neighbour 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 Sheldons obsessiveness when she accidentally sits in Sheldons sit on the couch, and is as well to their lifestyle f.x. Klingon Boggle.

Penny shower is out of order, so she borrows Leonard and Sheldons. 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 Pennys ex-boyfriend refuses to give up the TV, and steals Leonard and Sheldons pants.