Filmmaker Terry Zwigoff creates a complex but affectionate portrait of his longtime friend, underground cartoonist Robert Crumb. A notorious curmudgeon who would prefer to be alone with his fellow cartoonist wife Aline Kominsky-Crumb and his beloved vintage jazz records, Crumb reveals himself to be a complicated personality who suffered a troubled upbringing and harbors a philosophical opposition to the 1960s hippie underground that first celebrated his work.