You people go to a lot of concerts..I've only seen:

Def Leopard
Nirvana
Metallica
Motley Crue
Smashing Pumpkins
Rage Against the Machine
Everclear/Matchbox 20 (same show)
Creed (the remains of Alice in Chains opened)
Harvey Danger
and I'll be seeing NIN with Queens of the Stone Age on 11/5

I may be forgetting someone...but I think that's it.