Damn, it's been a while. I think my last concert was when World/Inferno opened for Against Me in Philly. It was a great excuse to chill with my friends down there. We got drunk, watched Inferno, then left before any of the other acts even came on. On the way home we stopped for some Thai food, which was delicious. Good times...
Iron Maiden. It was such an energizing show, like a religious experience, that I got back drained and hoarse from screaming and jumping like a teenager. Possibly the greatest concert I've ever been to.
HIM, man do I regret leaving early not because I wanted to but because me and my best friend stood on line for 6 hours to get in and another 4 for them to come on stage so by the end I lost feeling in my legs =/