My favorites are already listed, so I'll just talk about the one I don't see mentioned.
I really like the Youtuber trashyf@g (It's an "a" instead of an @ symbol; she is a girl, and who stated the username came from her friend's old account, and he merely gave it to her). Her looks are not very conventional or something you'd wear out everyday, but they are very avant garde and original. I honestly think she is one of the most original make up artists out there; her looks combine both art AND make up. I'd say check her out if you're really open minded about make up.