Robert Crumb, the man behind “Fritz the Cat” and “Mr. Natural”, is considered a controversial, trailblazing figure in the American underground comic book scene thanks to his anti-authoritarian humour, his scathing satire and his sexually charged innuendo. Having full access to the innermost thoughts of his main character, as well as his family members, Terry Zwigoff (“Ghost World”) drags his traumatic past to the surface and builds an intimate portrait of a man walking the fine line between genius and madman. One of the most emblematic documentaries of the ’90s.