Definitely the trippiest World War II movie you’ll ever see, Slaughterhouse-Five ends on an alien planet with the hero having sex with a movie star in a zoo — which happens after he dies of old age. The movie suggests that all the interspersed war scenes — in which he fights in Germany, gets captured, and witnesses the bombing of Dresden — are just as insane as the aliens and time travel. It can’t touch the ultra-brilliant classic novel by Kurt Vonnegut upon which it’s based, but Vonnegut fans would be remiss not to check it out. (And while you’re at it, watch the World War II-themed adaptation of his novel Mother Night, starring Nick Nolte as a former American spy who worked as a Nazi propagandist.