My favorite is the one where Jerry sits in first class next to the model, while Elaine gets stuck in coach with a kosher meal and trys to get into coach. At the same time, Kramer and George fight over which route to take to the airport. Once at the correct airport, they have an adventure with a serial killer and Kramer's old roommate who he claims still owes him $$. This one puts me in stitches everytime.