While I like many forms of rock and alternative, and also electronic/trance/dance music, currently my faves are:
1. Pink Floyd Dark Side of the Moon
2. Tool Lateralus
I want very much to see either of these bands live.
Bands I have seen live (and who played together):
Sevendust, Soil, Switched
Tommy Lee (met him), Oleander, Nonpoint, Local H, Drowning Pool was supposed to be there but Dave Williams died right before the concert, several others
I have been to other concerts, but I don't have time to list them right now.