Pantera (2x)
Strung Out (2x)
Rise Against
Nofx
Lagwagon
Poison the Well
Thrice (meh)
Throwdown
Steppenwolf
George Thorogood and the Destroyers
Raised Fist (Swedish hardcore at its finest)
Johnny Winter
Full Blown Chaos
Children of Bodom
Slayer
Slipknot

That's about all I can remeber. I did see Simple Plan! It was at a Warped Tour show several years ago. I watched them get bottles tossed at them and get boo'ed off the stage. I was tokin a joint at the time from a distance, and it was awesome seeing thousands of bottles being hurled at them. It gave me pleasure.