Darth Cheney
Apparently, Dick Cheney doesn't mind being called Darth Vader:
While the vice president’s 36-minute speech was characteristically somber in tone, he displayed a flash of humor in acknowledging that his imperious manner has earned him the nickname "Darth Vader" in some quarters. "I've been asked if that nickname bothers me, and the answer is, no," he said. "After all, Darth Vader is one of the nicer things I’ve been called recently."
So, here's the question: Are people really calling him meaner things than "Darth Vader," or does he just take "Darth Vader" as a compliment? I think I can guess...