"Back to the Future: The Enchantment Under the Sea Dance Revisited"

Well it happened...The first thing your Uncle Buck was going to do when he reached heaven has happened here on earth (thx DoubleViking.com): Wonder what it would be like to have Parts I and II of "Back to the Future" synched up on a split-screen during which both Marty McFlys are together? Here's your answer! (Disclaimer: Time gaps are due to logical off-screen action)