Just my orinion, but the impression I get from watching his interviews is that Christopher Walken is actually a very stable, level-headed guy who’s having a lot of fun with the fact that he can play a psychotic freak so well. Despite how weird the characters he plays are, I haven’t seen anything to indicate he’s like that in real life.
Other than that, I agree with the votes for Glover, Jolie and Young.
Sean Penn used to be quite the freak, but I haven’t heard much about his antics lately. Has he settled down?
Christina Aguilera? She’s not weird. She’s cultivated an image of being weird to sell records. I mean, no-one’s really suckered in by the skanky clothes and all are they?