I'm pretty lukewarm on Frank Miller but Daredevil is probably my favorite of his, partially for nostalgia reasons, it's just superhero comics done right.
Another thing to check out for superhero comics is writer John Broome, he re-booted Green Lantern and the Flash in the 50's and a bunch of other sci-fi stuff. They are campy, wacky, creative and generally off-beat.
For dark fantasy I recommend Dungeon by Lewis Trondheim and Joann Sfar. http://www.nbmpub.com/humor/trondheim/dungeon/dungeonhome.html
It's cartoony and comedic, has really great dialogue, interesting characters and a sprawling world.