A Night In Heaven (1983) The most depressing movie about marriage you've ever seen masquerading as a super-cheesy male stripper movie.
The Disappearance (1977) Donald Sutherland is a hitman having a soulless emotional crisis, then his wife vanishes.
Torchlight (1985) Cautionary anti-drug tale focused almost exclusively on the dangers of freebasing cocaine.
The Liberation of L.B. Jones (1969) An exploitation/blaxploitation movie a few years ahead of its time.