I am cheating the shit out of this topic when I say this. Early Frank Miller is right up there for my favorite art style.
For anyone who doesn't know, Miller was very, very open about being influenced my manga in his art style, and he was one of the first to do so.
This is most appearent in Ronin, but can also be seen in his Daredevil and The Dark Knight Returns.
Anyway, he helped bring manga to the ears of comic fans in the 80's, so I am giving him a nod.