Now, 20 years after he last crossed light-sabres with Luke Skywalker, the man who played Darth Vader in the original Star Wars trilogy says he is ready to reprise his role as the Dark Lord. David Prowse, now 66 and preparing for his fifth hip operation, admits he is a long way past the peak of fitness he attained in his twenties, prior to Star Wars, when he was three times British Weightlifting Champion and a contender for Mr Universe.