All the concerts I've been to were badass. Rolling Stones, front and center. Toadies I could have jumped onto the stage. KISS (bad band, great show), my dad got free tickets that were crappy, snuck into a better area where nobody was sitting, essentially front center. Dweezle Zappa, within 10 feet of him. Dropkick Murphys (best so far)- me, a fireman, my dad (also a fireman), my best friend and my shitfaced drunk brother taking on about 25 people for about two and a half hours hours fighting.
There was a midget at the Murphy's concert who kicked the ass of this really big, like six foot three-hundred pound dude. It was great. I actually wrote a song about how badass that guy was.
Anyway, my concert experiences have all been great.
edit-
Oh, at one point I tried to get out of the pit cause I was about to collapse. This guy on the edge threw me back in. I charged behind him, punched him in his back, shoved him in, and leaned on a person he was with and rested until I had caught my breath.