This past Sunday, Jimmy Kimmel did his annual star-studded fake-movie-trailer thing. The theme was popular internet videos. Where most actors just showed up, read the lines, and mugged a little bit, Joseph Gordon-Levitt went method – for no reason. Last night, Kimmel played a side-by-side clip of Levitt performing "David After Dentist" with eerie accuracy. Kimmel stressed that the show didn't ask him to do it. It's a testament to the free time of those with personal assistants.