[6] The best thing about Up in the Air, the new film from Juno director Jason Reitman, are the three performances by ever-reliable George Clooney, gorgeous Vera Farmiga, and plucky Anna Kendrick. But don’t see this movie expecting a comedy, because Juno it’s not. In fact, it’s pretty depressing, and not just because it’s about a man who fires people for a living. While it’s …