Death Angel @ GMM 2006:
I was right at the front just behind the bars, headbanging & smiling the whole time, pits going on everywhere. Mark Osegueda running around on stage with a bottle of wodka & a BIG grin.
Metallica @ Werchter Boutique 2012:
Not THAT crazy in terms of "physical" stuff, but the singing from the audience was the loudest I've ever experienced. I couldn't even speak properly for a while, luckily nobody heard me properly because my singing sucks to say the least...