Watching disciples of the satanic rule

It's amusing how Sam Dunn and Scott McFadyen kept asking everyone has Grunge anything to do with Metal and everyone said no absolutely not, until someone finally said something along the line that maybe it has something to do with Metal and that was enough to include Grunge to the history of Heavy Metal. Grunge should have been replaced by Death and Black Metal and this would have been - if it ain't already - the best and most definitive Metal documentation ever produced. Of course, some influential bands and subgenres were left out and the Hair Metal and Nu Metal episodes were hair-raisingly embarrassing, but that's just my personal hatred on them. Few interviewees stood out, namely: Bruce Dickinson, Arthur Brown, Steve Harris, Geezer Butler, Ronnie James Dio and, of course, Lemmy.