Silver screen machines: These are the all-time best movies about A.I.

There are some great tech documentaries out there, but sometimes you just need a good feature film. But which one to choose for the discerning A.I. fan? Combing through the cinematic archives, we've made our picks for the best A.I.-themed movies you have to see before you die. Or, at least, before the machines take over and we're put to work in the dung mines with no time for frivolous entertainment. Artificial intelligence wasn't formed as its own official discipline until the mid-1950s, but the first "must watch" movie on this list pre-dates this by more than a quarter century. Made by German expressionist filmmaker Fritz Lang, Metropolis is an epic science fiction film which has inspired countless other movies in the genre.