Maybe not to everyone's tastes, but
DAMN! I LIKE IT!
I can't even begin to describe all the ways that I like it, but as an achievement in the graphic arts it is simply unprecedented. Nothing like this has been done before (maybe only the beautiful but flawed Sky Captain & the World of Tomorrow can even be compared to it).
If you like any of the following:
film noir
Quentin Tarantino
graphic novels
Bruce Willis
anime
neo-classical comic book art (Steranko, Kirby, Adams, all of whom receive special thanks in the end credits)
Mickey Rourke (I'm not ashamed to admit it)
and good old-fashioned american violence, then you'll love this film.