Actor Jason Momoa stepped away from his hosting gig at "Back to the Beginning" and joined a circle pit while Pantera played.

The "Back to the Beginning" Black Sabbath and Ozzy Osbourne tribute is under way, and here's every song played so far.

While taking the stage with Tom Morello's All Stars to cover "Shot in the dark" and "Sweet Leaf," David Draiman was booed by ...

Here's a look at "Working Class Hero," the museum exhibition dedicated to Black Sabbath and Ozzy Osbourne's numerous ...