Paz de
la Huerta when she looks like
this and not like
this, although her general awesomeness transcends whether or not she's having a good face day.
I'm pretty big on
April Pearson and
Carey Mulligan is one of the few girls who looks better with short hair, she's damn classy. Worthy of the full photo treatment is the rather fabulous Daisy Lowe:

who used to date
Mark Ronson, gah jealous of both of them
As for the gents,
August asdfghjklhngyi Diehl and
Al Pacino in his day. Actually, forget that he's still pretty damn fine for like, 70.
Got a huge thing for
Vincent Cassel after seeing him in Black Swan it was like unfhngf etc, although he seemingly looks better in motion.
My ovaries will always be in the possession of
J Ass though.
No not literally, that would be disgusting.