Movie mogul George Lucas is reteaming with his Star Wars star Mark Hamill to provide the voices for an upcoming episode of animated show Robot Chicken. Lucas and Hamill, who played Luke Skywalker in the original Star Wars trilogy, are taking part in a show that honours the 30th anniversary of the first movie in the sci-fi franchise. Robot Chicken's Star Wars tribute episode will air on Cartoon Network in the US on 17 June (07).