Factual error: Near the end of the movie, Jacob takes a cab to go back to Brooklyn, supposedly from another part of New York. However, in the next shot, we see that at the beginning of the ride, they are already in Brooklyn (on Division Ave, for those who know Brooklyn).
Jacob's Ladder (1990)
Ending / spoiler
Directed by: Adrian Lyne
Starring: Ving Rhames, Tim Robbins, Danny Aiello, Jason Alexander, Matt Craven
Jake died in Vietnam. The movie is the result of his spirit which doesn't want to accept his dead and clinges to life (the idea of this is told by Louis, a less convincing interpretation is that it is a hallucination shortly before his dead). Once he "accepts" his dead, he goes "to heaven".
More mistakes in Jacob's Ladder
Jacob's Doctor: You're a lucky guy, Jake. You must have friends in high places.
Trivia: Macaulay Culkin, although playing a truly pivotal role, is not credited. Pretty peculiar, huh?