William Gibson: No Map For These Territories.
The film is an extended author interview, and Gibson has interesting things to say. As IMDB puts it, however, "you see Gibson talking in the backseat of a car, often with a cigarette in his hand, while the world goes by. Interviews are spliced with quickly edited footage of modern day life and the effect, for the most part, works." Works, if by "working" you mean inducing seizures, an endeavor which I suppose could be valuable in some military or scientific context. Plus, dissonant background music by The Edge makes it impossible simply to shut one's eyes and listen.
This movie literally is out to get you.