At the height of the Cold War, there were a bunch of mainstream movies that came out bearing pacifist messages. “War Games” (1983) might have been the best of them, for many reasons. The then-implausible plot that an AI computer program, accidentally activated by a hacker, could take the world to the brink of nuclear annihilation, becomes more plausible every day. And it stars Ferris Bueller! And Ally Sheedy co-stars as the girl in your English class you never had the guts to ask out. And Dabney Coleman! And two dudes play essentially a young Bill Gates and Paul Allen.