Nirvana and Cobain were never any more big a deal for me than they were for everyone else of more or less my age and sensibilities - ie still quite a big deal but, in my case, in more of a diffused and generalised way than imbued with a huge amount of personal meaning. So I didn't expect this documentary to particularly affect me, and it didn't (although it uses its home videos and other personal sources well), but what it did do was remind me of the whole grunge thing, how messy it actually was before it became completely packaged and mainstreamed and all that.