Sin City I somehow didn't manage to watch in the cinema - every time we wanted to there were either no tickets, or no one could, or then the movie was no longer in the cinema. Quite stupid - but now I bought it on DVD. Wow. Impressive - absolutely impressive. Of course, the plot is like in the comics - relatively little demand, relatively much violence. But the implementation is gigantic.
By the way, I now also know why the Apple cinema displays are called that.