With generous clips from Herzog and Kinski's collaborations, My Best Fiend is one of the great portraits of artists fighting, even with murderous rage, to reach the sublime.

Herzog's portrait of his friend is as mad as his films, and as fascinating.

What's the difference between artistry and bravado? This isn't a question I generally feel inclined to ask, but I'm compelled by the work of Werner Herzog, who scrambles the two until it's difficult to tell which is which.

...a deeply personal project.