The Big Bang Theory: Season 1, Episode 1

1 - 1: Pilot

Leonard and Sheldon visit a high IQ sperm bank, but have regrets about going, so they leave, only to feel guilty afterwards. When they arrive back at the apartment, they see a beautiful blonde woman, Penny, in the apartment across the hallway and they attempt to befriend her. Sheldon, who has no experience being around someone like Penny, doesn’t know what to do, while Leonard really takes a shine to her. Meanwhile, Howard makes numerous attempts to impress Penny, while Koothrappali is too shy to talk to her.