Friends

The artwork in Central Perk is changed every three episodes.

Courtney Cox added Arquette to the end of her name after her marriage to David Arquette between seasons five and six. Her father, Richard L. Cox, died in 2001 and during the midst of the seventh season, she dropped the Arquette in her father's memory.

The episode where Phoebe thinks her dead mother has been reincarnated as a cat was written by Marta Kauffman at the time when her own mother recently passed away (the episode was dedicated to her). In an interview with one of the other writers, they admitted that said this would have gotten shot down at the table read, but nobody felt comfortable saying "no" under the circumstances.