Ozzfest 98, too many bad bands to name, but what the hell, I was like 13 and Megadeth, Tool, and Ozzy were pretty cool, among a very few others. I was also dragged to Warped Tour once or twice, I think when I was 13 and 14, or maybe as late as 15 (all depending on what time in the summer it was). As for concerts, besides festivals, that I've gone to by choice....Powerman 5000, Fear Factory (who was pretty cool, but Coal Chamber and Static-X opened up), and I'm sure a few others in the nu-metal genre. I also went to a Dashboard Confessional show only to see the openers The Anniversary, and it was with my girlfriend anyway.