Army of Darkness: Director's cut SPOILER
Well, in the theatrical release Ash goes back to his own time, his girlfriend is alive again, and he has to fight some demons, etc. In the director's cut he sleeps in a cave (don't remember if that happens in the theatrical) under the power of a magical potion, so he doesn't age. You see the watch Ash get covered in spider-webs as his beard grows (rip van winkle style), and there are flashes to the world aging to modern times. Finally Ash gets up, cleans himself off, and breaks out of the cave. He looks out on the world and sees Big Ben sinking into the earth, and lots of urban decay. (perhaps a reference to the original Planet of the Apes, but those were before my time) Ash screams, "I slept too long. I slept toooo loooong!"
The End