Friends

In the opening credits to Friends: The One After Vegas (1999), all of the names in the opening (actors and crew) were changed to have "Arquette" at the end of them, a gag on Courteney Cox Arquette who had just recently married David Arquette.

Joey's statue of a white dog was originally given to Jennifer Aniston as a good luck present from her best friend when she started acting. She offered to lend it to the show for the episode where Joey became rich and bought a lot of stuff. After that episode, the producers decided to keep it.

Lisa Kudrow was terrified of the duck that showed up in Season 3.