Or more famously knows as Luke Skywalker, from the famous science/fiction "Star Wars". But little do people know he's also the same guy that voiced the Joker in Batman the Animated Series, Batman Beyond, and any other Batman series that didn't completely revamp the original. (Please do not mistake Batman the Animated Series for Batman: Brave and the Bold.)
Person 1: Dude Mark Hamill was awesome in Star Wars!
Person 2: He also played the Joker.
Person 1: ... LOL whut? :D