I know there's supposed to be a crap load stuff about Nirvana, Alice in Chains, Soundgarden, Pearl Jam but I don't find it. The only movie on this topic which falls under the category of dcumenatary movies is 1991: The year punk broke, which follows the tour of Sonic Youth and Nirvana. All other stuff I have found is either live concerts or TV series, which is not quite a documentary movie.
Besides I am(was) really into Seatle scene, so I am not intersted in historical, journalism type of stuff, I want some real non-fiction which captures the spirit of this era.