I first twigged to this when that Theremin movie came out. That was really cool. Then the Brian-Wilson-o-mentary, which was excellent also (although it could’ve used some interviews with skeptics who said that Brian is no big deal). The Keith-Richards-produced Chuck Berry movie was fascinating in a different way. And Monterey Pop, Gimme Shelter, Don’t Look Back. Even that doc a few years ago about the Funk Brothers–that was really pretty lame, but it was still great. I’m left to conclude that all rockumentaries are the best. I think there are a few zillion more I haven’t seen.
You didn't mention the Big Kahuna of rockumentaries, The Last Waltz. It may get some renewed attention with the opening of Martin Scorsese's new concert film on the Rolling Stones (Shine a Light). Early reviews say the Stones movie isn't in the same league as The Last Waltz.
… not to mention the epic Beatles Anthology (and the slightly less epic, but still amusing The Compleat Beatles).
And not just rockumentaries — Great Day in Harlem was an excellent look at the story behind a famous photo of every living (at the time) jazz legend. See: http://www.harlem.org/
Even mockumentaries are usually pretty good, especially This is Spinal Tap and the Rutles' All You Need is Cash.
Sports legends, Movies Stars, Statisticians. They all want to be rock stars.
two nice ones:
metallica with writers block
and
the pixies trying to reanimate a dead marriage
…