Earlier this month Sarah Silverman [1] recorded a music video announcing to the world that she’s F**king Matt Damon. Damon has long been the punchline of a running joke in Silverman’s boyfriend Jimmy Kimmel’s sign-off (”Apologies to Matt Damon, we’ve run out of time!”).

As a retaliation, Kimmel has recorded a music video himself, announcing that he’s F**king Ben Affleck! The video features cameo appearances from Brad Pitt, Harrison Ford, Cameron Diaz, Joan Jett, Macy Gray, Robin Williams, Don Cheadle, Pete Wentz, Perry Farrell, Benji and Joel Madden, Lance Bass, Huey Lewis, Josh Groban, McLovin, Meatloaf, and former announcer and Mighty Mighty Bosstones frontman Dicky Barrett. Check it out after the jump.