I just watched this absolutely fascinating documentary.

Have a gander (but skip the pre-title stuff. It really begins at around 12 minutes in. And thanks, L):


UPDATE: I’d imagine that the extremity of some of that might put you off (or interest the shit out of you; whatevs). Part two is also interesting but goes off a bit later, so try Part Three: Moving Forward. It’s much straighter but really very interesting (thanks, M):