Completely splendid. A real exploration of the man from several different avenues. You hear excerpts from his work and he narrates them so wonderfully. I'd love to see his real version of City on the Edge of Forever. His house looks completely badass. The Lost Aztec Temple of Mars? What a great name. Sure he's an asshole, but it's real and pointed and realized from frustration. Stellar stuff.
Jonah Hill is one of the worst things to happen to cinema in the past 20 years. I liked him in I Heart Huckabees though.