VIDEO: Stephen Colbert and Jimmy Fallon Sing Rebecca Black's 'Friday'

Earlier this week, Stephen Colbert made a promise: he would sing Rebecca Black's "Friday" with The Roots if Jimmy Fallon would join him in raising $26,000 for DonorsChoose.org. Fallon issued the challenge to his fans: if they helped to raise the money, he would sing the song (to use the word "song" loosely) with Stephen.

Well, it's pretty clear how much Fallon and Colbert fans wanted to see this happen: the $26,000 was raised, and Colbert returned to "Late Night with Jimmy Fallon" to perform the YouTube hit.

The result is an absolutely epic rendition of "Friday," starting with Colbert, dressed in a tuxedo, standing alone in a spotlight. He is soon joined by The Roots, who provide a verse in rap. Then Fallon takes a few bars and introduces "American Idol" winner Taylor Hicks, who belts "Friday" like it was meant to be sung!

Check out the video below. You won't be disappointed.