Bad Brains at the Rage in Baltimore in 1990? I was like 15 or 16 and they packed like 300 people into a 200 person place, it was well over 100 degrees inside and you were asses to elbows. Somebody let off mace inside halfway through the show, there was a super violent circle pit and there was a huge fight afterwards...good times!
I would have to say Bad Company with the Doobie Brothers this past month at the VB amphitheater for sure. 311 with Ziggy Marley andThe Expendables is a close 2nd, but it's just not the same as the Old School Rock n' Roll Greats.