Rockstar Mayhem 2008-Slipknot-Before I ForgetAt Glen Helen Pavilion, July 13, 2008 13, 2008, 36, Airbourne, At, Before, Black, Chord, Crazyfists, Death, Disturbed, DragonForce, Emofags, Finger, Five, Forget, Glen, Head, Helen, Hot, HxC, Jericho, July, Jägermeister, Machine, Mastodon, Mayhem, Metal, of, Pavilion, Punch, Red, Rockstar, Silence, Slipknot, Stage, Suicide, The, Tide, Topic, Underoath, Walls