Darth Vader and Imperial troops to storm Paris boulevard Thu May 12, 2:09 PM ET PARIS (AFP) - Hundreds of Darth Vaders and imperial troops will invade a Paris boulevard Friday for a convention to mark the launch of the long-awaited final episode of director George Lucas' "Star Wars" series. The three-day convention, to be held at the Grand Rex cinema, opens with a costume parade by fans along the boulevard followed by a concert with more than 60 musicians playing the theme tunes from the films. "Episode III: The Revenge of the Sith" is set to get its world...