Am I the only one who thinks that David Fincher needs to direct something written by Neal Stephenson? After having seen/read almost everything by both men, I get a very similar vibe from them. Elaborately detailed worlds with a dark kick; intense, iconoclastic protagonists (or sometimes antagonists, e.g. John Doe from Se7en and Abdallah Jones from REAMDE); an appreciation for complex systems and how ugly things can get when the rubber hits the road.
Failing some sort of entirely new collaboration, I'd settle for Fincher directing an adaptation of The Diamond Age or, better yet, Cryptonomicon. Hell, let's go whole hog and have him direct a Baroque Cycle hexology. Who's with me?