What book should be made into a movie?

The graphic novel the Incal by Alexandro Jodorowsky and Jean Gerard (aka Moebius) would make a phenomenal movie, or several. Its imagery alone is reason enough, but the depth to the future world the characters live in is very engrossing. Everything in that world, as all good sci-fi has, is a parody: the News, the politics, even the stratified city that is an actual large straight round hole in the ground, with hard class divides and abuse of them. The upper class wares literal halos above their heads and are anything but angles. The lowest classes are mutated in the bottom of the city by the pollution that collects there. Yet, there is a real sense of a love of life and a lived in feel that is comes back in sci-fi movies today.