Terry Gilliam's "The Zero Theorem," like most of his films, focuses on the all-too-thin line between sanity and insanity, reality and delusion. Its steampunk-meets-cyberpunk visual style is a wonderful jumble that's reminiscent of his much loved "Brazil," with touches like a computer mainframe that looks like a blast furnace, or personally targeted advertising blasting commercials for The Church of Batman the Redeemer.