"Sin City" was incredible, IMO. It worked on pretty much every level for me. The only thing I was perplexed by was Josh Hartnett/The Man, and his involvement. He brought the story full circle, at the same time, there was no real "closure".
I could appreciate the pulp comic story approach, with the random collection of stories. I remember you mentioning, Rob, that the movie really didn't have a point. I found it to be more or less, like I had said, a collection of "tales" all pertaining to (Ba)sin City. I'm not big on film noir, but its influence is all over the place.
Solid stuff, and while I'm not an avid fan of Miller's or comics in general, having known about his artistic style, and having observed it, I think it carried over pretty well onto the silver screen.
..and yes, Mickey Rourke was just unbelievable, and Nick Stahl impressed me as well. The most unlikely of actors really drove this one home for me. I'm hoping for a Director's Cut, if not an Extended version.