Will the sight of Anakin Skywalker morphing into Darth Vader be too intense for the kiddies? According to George Lucas, yes. The Star Wars mastermind is predicting that Revenge of the Sith, due out May 19, will get slapped with a PG-13 rating. All of the previous Star Wars films have been rated PG. "This is the darkest of them all," Lucas tells USA Today. "I don't think it's going to be rated like the other ones. It's just more emotionally intense." But will it be any good? Please, let this one be good.