6. "Permanent Midnight"
Remember Alf? The 1980s sitcom, about an alien from the planet Melmac that lived peacefully with a family in California, included writerJerry Stahl, a severely self-destructive guy named who had a severe addiction to heroin. It hardly sounds like the subject of a great movie, but in 1998, Ben Stiller portrayed Stahl in the supremely bizarre movie Permanent Midnight. The film received mixed reviews and barely saw a theatrical release, but it's aged quite well and has a devoted cult following.