Just when you thought this internet phenomenon couldn't get any more ridiculous, Jimmy Fallon calls on Stephen Colbert to sing Rebecca Black's "Friday" with the help of The Roots. Black Thought raps while being pushed in a prop car, Taylor Hicks bursts through a calendar, and things are taken to an all time high level of absurdity. At least it was for a good cause - Fallon promised to make this happen if they could raise $26,000 for DonorsChoose.org and they reached their goal.