Currently listening to alot of the Foo Fighters and Incubus. Both excellent bands. I also like Tool and Maynard's 2 side projects (A Perfect Circle and Puscifer). The Mars Volta, Dream Theater, 311, Radiohead, 30 Seconds To Mars, I have a whole slew of favorite bands in the general 'rock n roll' area. Also like alot of older bands like the Beatles, Moody Blues, Jethro Tull, Pink Floyd... I could go on but I'd rather keep this list short.
And for anyone born during the respective band's generation, I apologize for inadvertently calling you old
I listen to alot of techno, rave, trance and just electronic music in general. Dubstep mixes, Trentemoller, Infected Mushroom, Aphex Twin, Delerium etc etc.
Hip hop and R&B are both awesome. Gangster rap can be really grating to my compassionate spirit and I generally avoid it. Except for Ice Cube. He plays in family movies so it's hard to take it seriously
Used to be really into heavy metal, mostly because that's what all my friends were into at the time and I wasn't exposed to much else (my mom would frequently explain how the Rolling Stones and David Bowie were the antichrist. My musical selections were limited to Christian bands or classical music when I was younger). I like classical music, but I tend to not go out of my way to listen to it.
I like some singers/pop artists like Regina Spektor, Natalie Walker, Kate Havnevik. Many guys I know are shy about admitting they like that kind of music, but I see nothing wrong with liking musical women
I despise Miley Cyrus though. And her autotuned robovoice.
Plenty of bands I haven't named simply because they don't come to mind right now.