I know that trailers can be most deceiving and that Alan Moore hasn't been particularly well served by movie adaptations of his work (yes I'm looking at you LXG!) but the preview of one of my all-time favourite works, Watchmen, looks promising. If nothing else, Zack Snyder (Dawn of the Dead remake and 300) seems to have captured the look of the graphic novel at any rate. I remain hopeful.
Check out the trailer here
Incidentally I notice that the credits say "based on the graphic novel illustrated by Dave Gibbons". No mention of Alan M anywhere - but I believe that's at his request.