Walter Murch

Not strictly a documentary, or at all. He delivered a very interesting and in depth talk on editing in picture and sound. He also delved very in depth into his own life and it was a very sapid talk.
The question and answer session was also very eye-opening. Apparently Francis Ford Coppola describes himself as a very spontaneous editor, whereas Murch is apparently very thoughtful about each individual scene and cut in a film. "That being said," the interviewer asked, "Why did you propose to your wife, Aggie, after only knowing her two weeks?" This question had the audience laughing, but Walter Murch was unabashed.
He is a genuinely lovely gentleman, and a very endearing speaker. Furthering on from this talk, I will be purchasing a copy of Murch's book, In the Blink of an Eye, due to some of the ideas in the talk being expanded upon in there.