Right now I am into The Weakerthans in a pretty huge way, I got to see them live twice in the last month or so and they are really incredible. I got to see Anamanaguchi a month ago as well, which was pretty badass. I would say that I'm generally into rock, but I've found rap, country, r&b, classical, jazz, blues, pretty much any genre has some really talented people that are great to listen to. Some of my favorite all-time rock bands are:
AThe PillowsThe WeakerthansThunderbirds Are Now! (rolling stone top 40 under my friend Howard's mgmt!)
Portastatic/SuperchunkAt The Drive In/The Mars VoltaTed Leo & The PharmacistsI also (surprise!) listen to a LOT of chiptunes. Kohina and Nectarine radio and some 2 or 3 GB of game soundtracks from the last 20 years or so provide the bulk of this...fav game soundtracks:
Streets of Rage 2
Rocket Knight Adventures
Batman (NES)
Journey To Silius
Chrono-Trigger
Castlevania 4
Secret of Mana
Vortex
Megaman X
Shatterhand
Heavy Barrel
Life Force
Castlevania 3
Modern game soundtracks that I enjoy:
Katamari Damacy
Quake 2
Prince of Persia
Dynasty Warriors
Einhander
Hitman Blood Money
UT2004
Symphony of the Night
Warhawk
Wipeout 2097/XL
Silent Hill 2
Contra: Shattered Soldier
Command & Conquer: Generals
Not to mention chiptune albums like FX3, Out There, Pioneer, Power Supply, etc etc...