I don't like defining my favorites as categories, so here are some of my favorite bands:
Coldplay (#1!), Blue October, Evanescence, Howie Day, Matchbox 20, Seal, Barenaked Ladies, Pink, Goo Goo Dolls, Savage Garden, Dave Matthews Band, and my Legend of Zelda soundtracks, of course x]
(While typing I'm listening to Blue October's "Dirt Room")