Stuart decides to organize a Halloween party at his comic book store so Raj decides to become the party planner. At the encouragement of Amy and Bernadette, Penny decides to take more effort to understand what Leonard does for a living, but ends up hooking up with him at his workplace. Meanwhile, Howard, who just got back from space cannot stop talking about his time in space by making multiple references about space, which annoys Bernadette. Sheldon and Amy face a conflict when they cannot agree on the costumes to wear to the Halloween party. Written by
Did You Know?
Buzz Aldrin, the second man to walk on the moon after Neil Armstrong, makes his first guest appearance on the show. See more
Before Leonard turns on the electromagnet he asks Penny if she has any piercings. If he doesn't know who does? See more
Amy Farrah Fowler
I'm Raggedy Ann, and he's Raggedy C-3PO.
We compromised. I lost.
The Big Bang Theory Theme (Instrumental)
Composed and Performed by Barenaked Ladies See more