shout obscenities at the headlining band (unless you like them!)
grope various gig people before checking the person was gay \
straight...
grope various gig people before checking the person can't kick
the s**t out of you
stage dive onto the security instead of the crowd
sexually molest the security - (no wait, surely that's been done
right?! ;)
use deadly \ heavy objects (e.g.; napalm) in the mosh pit
take out your wide screen, panoramic, extra zoom, and most importantly
extra flash video camera...