From Ectoplasmosis:

The 1987 documentary on the life of Robert Crumb, underground comics pioneer, 60s icon, and the quintessential Dirty Old Man. Written by the man himself, it lacks the distance from its subject that made Terry Zwigoff’s Crumb more of a revelatory study in neuroses and emotional trauma and instead puts you squarely in the middle of Crumb’s gonzo world of misogyny and self-loathing and in that sense it is a much better illustration of Crumb the Artist as opposed to Crumb the Man.