1st concert was a festival thing with hip-hop/pop music to which I remember Mase trying to incite a riot, saying 'fuck Mexicans' while doing a show in El Paso, TX, which is a city primarily composed of people who are Mexican-American. Yeah, he had to be escorted out by EPPD. At that same show, Destiny's Child, when 'no no no' came out. That was 97 I think.
Since then...
Hoobastank, Taproot, Clockwise (local LV band that was signed to RCA breifly), 12/02
LV local music scene show (lots of LV local bands, including a favorite of mine Ill Figures), 3/03
Linkin Park, 6/03
Juanes, 7/03
Sugar Ray, Avion, 7/04
I'm a big fan of concerts but money and schedules just won't allow for more concert going.