Scott Brown's debut to the Senate has caught a lot attention. Not just because he took Ted Kennedy's former seat, but because of his sexy past. The hunky Republican Senator, who formerly posed nude in an issue of Cosmopolitan, is a comedy gold mine, and last night Letterman did a little digging himself, counting down the "Top Ten Things Overhead During Scott Brown's First Day In The Senate." Dave went for the obvious ("Wanna throw some pants on, Scotty?") and also paused to reflect on what the founding fathers would have said. "The guy is an underpants model. That would have been fine with the founding fathers, especially John Hancock."