watched HYPE last year, there are plenty of terrible bands in it, but there are also some good ones and i like the way it captures a place and time that really can't ever exist again in the way it did due to things like the internet taking full control of everything.
metallimania is more or less like a heavy metal parking lot kind of thing, and i have never seen the 'some kind of monster' movie that came years later, but the one i mentioned is actually really funny at parts... like the guy who invites the cameraman in to see his metallica collection which features something like 30 or 40 LPs and 12" singles of the band, and later when he is asked something about how one of the live versions sounds like or something (not quite, i forget), he mentions how he doesn't even have a turntable so he doesn't know.... GOLD.