If you are a fan of the original Star Wars then you know that Mark Hamill played Luke Skywalker. But, what you might not know is that he also does a lot of voice work. He specifically did the voice of Joker in Batman The Animated Series and the recent string of Batman Arkham games that have come out over the last few years. Check it out and enjoy a multi-talented man.
(accompanying picture is a screen capture from YouTube)