The One with Joey's New Brain

This episode is absolutely hilarious because David Schwimmer actually plays the bagpipes! If you watch the scence where he is playing for the group, they pan around to all of them listening and you can plainly see Jennifer Aniston cracking up through the whole scene! In the bloopers it said that they had to shoot that scene over and over because Jennifer couldn’t stop laughing! This is definitely one of my favorites.