As millions of Ozzy Osbourne fans found out on the MTV reality show "The Osbournes," the Prince of Darkness wasn't anything like wild his rock-star stage persona – at home, he was sweet, gentle and mischeivous,

The bill was rounded out by the likes of Metallica, Guns N’ Roses, Slayer and Gojira, all of whom played short sets consisting of their own material and one or two Sabbath or Osbourne covers. Famed actor Jason Momoa compered and Rage Against The Machine guitarist Tom Morello was the musical director.

Black Sabbath are widely regarded as the inventors, or at least leading pioneers of, heavy metal music. The Birmingham band – whose original and final line-up comprised bassist Geezer Butler, guitarist Tony Iommi,