I f'ing loved it. It was nice for me as I had only seen the commercial once or twice and never even really caught the name of the movie until I was invited to go see it with some friends. Needless to say, it exceeded my expectations.
Something that I noticed that I thought was really cool was how the blood seemed to have the same solid shade of red throughout the whole movie (and the credits for that matter), kinda adding to the stylish comic book goodness of it all. That and it wasn't just ridiculous, like a certain Kill Bill. I highly suggest you see it even just for the hell of it. It's not necessarily something to take seriously, just something that's extremely worth seeing.