The restaurant that Phoebe and Joey go to is the same one that Monica worked at as a chef in the first season of the show.
British journalist Sarfraz Manzoor was given an uncredited role as a coffee shop customer after he interviewed the show's creators on set.
The Magna Doodle appears to be a scene of a police take-down with a van, a police car, a police helicopter and two stick figure cops with guns drawn in the background is a house.
Monica is mad at her cousin for not inviting her to the wedding. She wears an off white dress to the wedding, which is one of the big wedding guest no nos. This is a subtle way to mess with Frannie's big day.