Who knew Matt Damon could sing and dance.

http://www.youtube.com/watch?v=wnVJZkDuVBM

Update: Some back-story video clips via Coming Soon:

During the third season of ABC’s “Jimmy Kimmel Live,” the host started closing his shows with, “Apologies to Matt Damon, we ran out of time,” even though the actor was never scheduled to come on the show. Damon finally appeared as a guest in September of 2006, but after a lengthy introduction by Kimmel, the actor sat down and Kimmel said they ran out of time which “infuriated” Damon. Kimmel then sent Guillermo, his sidekick, to the red carpet at the Ocean’s 13 premiere, and also “bumped” Damon from The Bourne Ultimatum by putting Guillermo in the role. On Thursday (1.31.08), it was payback time for Damon, as Sarah Silverman (Kimmel’s real-life girlfriend) showed a clip on the show featuring a song with Damon.