I rewatched Jacob's Ladder last month for the first time since I saw it in the theatre, oddly enough. It came out in 1990 and stars Tim Robbins as a Vietnam vet who had a weird and traumatizing experience in the war, and is now divorced and working as a postman when all sorts of eerie things start happening to him.

I think the twist is less surprising now than it was when I saw it, but the movie holds up even if you already know or guess the twist. It's very atmospheric and eerie. There's one particular scene where he's on a hospital gurney that had stood out as being one of the creepiest things I've ever seen, and it still was.