Matt Damon stunned late-night TV viewers in America on Thursday (31Jan08) when he teamed up with outrageous comedienne Sarah Silverman for a racy video skit to a tune called I'M F**KING MATT DAMON. The Bourne Supremacy star, who has been the subject of a longrunning joke on comedian Jimmy Kimmel's chat show, got his own back by performing with the TV star's girlfriend on the fifth anniversary of Jimmy Kimmel Live. As Silverman sang, "I'm f**king Matt Damon," the punky movie star attempted to keep a straight face as he added, "...on the bed, on the floor, on a towel by the door, in the tub, in the car, up against the mini-bar." At one point, Damon pretended to cup Silverman's breasts, asking, "Hey Kimmel, how do you like them apples?" Silverman finished the hilarious skit by pretending to dump a stunned Kimmel. It wasn't the only surprise for Kimmel, who was also celebrating his 40th birthday; rockers The Killers served up a special message for the comedian - a semi-naked greeting. The four-piece wished the TV star well, before adding, "We're not wearing any pants." The camera panned back to show the pixelated band naked from the waist down. Elvis Costello, Mike Tyson and Shaquille O'Neal also offered up comedy greetings.