At last night's premiere of Robert De Niro's movie about a movie producer, What Just Happened?, we asked several guests if they knew what a producer actually did. "It's an exploration of humiliation," said John Turturro. Right. "I know it has a lot to do with money," Lily Rabe told us. Getting warmer! Get more job descriptions from Steve Buscemi, Barry Levinson, and Cybill Shepherd in our Party Lines slideshow.