Do any of you watch the Epic Rap Battles of History?
They're currently on Season 2 of them and just released Adolf Hitler vs. Darth Vader 2.
If you haven't seen them before, watch the new one here:
and watch the old ones here:

My favorites: John Lenon vs. Bill O'Reilly, Darth Vader vs Hitler (1st and 2nd), Chuck Norris vs Abraham Lincoln, Einstein vs Hawking, and Mr. T vs Mr. Rogers.