I have refrained from posting anything related about Rebecca Black's "Friday" track, but this too good not to. The back story is that Jimmy Fallon had to rich a goal of raising $26,000 to match the donation Stephen Colbert had raised from auctioning off a painting of himself. The other component of that was if Jimmy Fallon raised the money Stephen Colbert would have to perform Rebecca Black's "Friday" track.
They raised the money and above is the video of Stephen Colberts performance with The Roots. I find this version much better than the original.