Letts tops himself, and I didn't think that was possible after his excellent documentary on The Clash. This is the finest broad survey of punk ever. It suggests that punk is an attitude at the heart of rock, which existed before there was a "punk rock" per se. As soon as "punk rock" appears, you have little scenesters making necessities of virtues, imposing orthodoxies that undermine the freedom that the music longed for or expressed. Tons of interviews with the pantheon of punk royalty, but it is often the forgotten geniuses who never made significant commercial indentation that have the most to offer. Punk also has the virtue of many short & tight tunes, so there is less excerpting of musical performances than one sees in 99% of music documentaries. Is there a soundtrack available?
