On Groupon, you can get $20 tickets to the Rockstar energy mayhem festival...just thought I'd let all the headbangers know...
Mushroom Head
Asking Alexandria
Suicide Silence
and Gay7x

I wouldn't go to that show for free, **** off and die.
Saw the lineup, no chance I would go.

2011 was decent, but bands like suicide silence, straight line stitch, etc ruined it for me. Wasn't too crazy about disturbed either.