I just thought of Jacob's Ladder when I saw Manchurian Candidate (awesome movie, very dark) becuase it was similar to Jacob's. And Jacob's was amazing, matter of fact it was top 5 in many lists of the most scary movies of all time, just because it is so damned disturbing. But after seeing many deleted scenes...it could be scarier and darker with more flow and I think, while the world wasn't ready for it then, its brilliance would be accepted now.