ive seen (as far as i can remember)

sum 41
lost prophets
linkin park
slayer
slipknot
hatebreed
korn (twice)
static x
HIM
Marilyn Manson

either slipknot or korn goes top, korns moshpit (24/8/05) was the harshest ive been in, more so than slipknot or slayer. Manson was close...