Guess who's back? After almost two decades since its last release 'Forbidden' (I.R.S., 1995), heavy metal overlords Black Sabbath return with a new album '13' (arriving June 11 via Vertigo/Universal), and veteran producer Rick Rubin at the helm. The LP is a double occasion: frontman Ozzy Osbourne and bassist Geezer Butler return to the mix for the first time since 1978's 'Never Say Die!' (Vertigo/Warner) and 1994's 'Cross Purposes' (I.R.S.), respectively. To commemorate the release, we revisit some of Sabbath's greatest hits throughout the years. Rock on!