Not the most obscure films from the 80s, but they tend to get overlooked:
Society
The Fog
Inferno
Parents
Phenomena
Tenebre
Lair Of The White Worm
Night Of The Creeps
Halloween 3 Season Of The Witch
The Gate
The Entity
and after they got the Mystery Science Theater treatment:
Zombie Nightmare (Jon Mikl Thor)
Hobgoblins
