‘Crumb’

As shocking yet haunting as a Diane Arbus photograph, disturbing because it is so unmistakably human, “Crumb” makes it difficult to look away. Though Terry Zwigoff’s 1995 documentary begins as an examination of the art and career of the celebrated cartoonist R. (for Robert) Crumb, it is considerably more than that. Because it provides an intimate view of Crumb’s singular background, it ends up dealing with larger, more complex issues, from the impact of family in shaping personality to the concept of the artist as a messenger to society from a scathing personal hell (TMC early Tuesday at 1:40 a.m.).