I haven't been to too many metal shows unfortunately, where I live sucks for it. But I have seen Slayer about 10 years ago and that was madness. I've never experienced anything on that level since.
i haven't been to a show in over a decade(about 15 years actually), but recently i've been trying to convince myself to get up off my ass and go. My brother-in-law is trying to get me to go to a System of a Down concert with him sometime in the near future(although i hear the band sucks balls live) .... and there's no way im going to a System concert and not to any proper metal shows!
I was looking through some vids and saw this ....
total fuckin' chaos! i love it