Personally I thought it was Awesome! It's pretty hard to capture the weird spirit of the graphic novels in movie form so I thought he did well, but to each his own.
I thought it was interesting how roughly the first half was pretty much a perfect adaptation, and then they kind of did their own thing through to the end. I first, I was a bit put off by that, but I have come around to it in subsequent viewings. I can't believe how much it got right, really.