I'm always entertained with these flashback episodes: when we get new information about the characters. Like Monica and Chandler had crushes on each other on separate occasions. The creators wants to re-write history sometimes to fit what they need to happen for the current storyline: in this instance the Monica-Chandler love story. So, The One with the Prom Video shows Monica and Rachel getting ready for prom - Ross is in college and Monica and Rachel in High School. How many years are there between Ross and Monica? How old were they in this episode VS the video from The one with the prom video? Or Monica's weight doesn't match the math I'm doing in my head.