Demon Lover Diary is on Vimeo. You should watch it. Ultra-rare documentary about the making of a cheap horror film which is at least as harrowing as Burden of Dreams and Hearts of Darkness but with the added tragicomedy of the fact that nobody even liked the movie they made (though honestly it's not that bad).
Watch out for the specter of Ted Nugent at his craziest.
Demon Lover Diary (1980) from Film Ape on Vimeo.