Kind of late in the thread, but here are some other bizarre movies that are of similar weirdness.
Liquid Sky (1982)
The Apple (1980)
The Return of the Living Dead (1985)
The American Astronaut (2001)
Arizona Dream (1993)
The Bed Sitting Room (1969)
Beyond the Black Rainbow (2010)
A Boy and His Dog (1975)
Cemetery Man [Dellamorte Dellamore] (1994)
Django Kill… If You Live, Shoot! (1967) (An ambiguously dead antihero who shoots golden bullets fights Mr. Sorrow and his gang of gay fascist cowboys) Oh-kay.
Enter the Void (2009)
Eraserhead (1977)
Forbidden Zone (1982) (The ‘Oingo Boingo’ movie)
Funky Forest: The First Contact
Greaser’s Palace (1972)
House [Hausu] (1977)
Well, there’s my list :) Thanks!