I saw it a couple od days ago. Pretty good and entertaining documentary, focusing on great styles and founders of metal, which I can't complain about. The part about Norwegian BMers, however, would propably shock some of us, because the filmmaker concentrate on some degenerate like drunk Mayhem's necrobutcher saying shit or Gorgoroth's Ghaal talking about Satan being the point of his music. Varg Vikernes is shown 3 seconds, only mentionning he's a murderer and arsonist instead of saying he was the greatest norwegian BMer of all. But overall a good documentary, even if we can learn more about metal by reading ANUS's metal section.