I usually listen to a lot of rap but there are a few songs from rock bands i like.
Rainbow in the dark - Dio (i think)
pepper (name of the band/also good road trip music)
Red hot chilli peppers
fireflies - owl city
Just in case your interested heres a few good rap songs
Take it no more - gorilla zoe
drop the world - eminem/lil wayne
Pepper is by the Butthole Surfers.
I definitely get in different music moods, which will dictate which music I listen to. Here's some examples:
If I want to listen to more calm stuff:
Blind Mellon, Bob Dylan, Bob Marley, Coldplay, Counting Crows, David Gilmour, The Decemberists, Flogging Molly (Not so calm), Jack Johnson, Led Zeppelin, The Nightwatchman, Oasis, Pink Floyd, RHCP, Bagpipe music, etc...
If I'm in the mood for more heavy stuff:
TOOL, White Zombie, PM5k, Pantera, SoaD, Soundgarden, KoRn, RAtM, Puscifer, A Perfect Circle, NIN, Metallica, Manson, Future Leaders of the World, Flogging Molly, Disturbed, Alice in Chains, etc...
Finally, if I'm in the mood for anything rap or trance:
Aphex Twin, Bone Thugs, darude, Fugees, Hallucinogen, Infected Mushroom, Jay-Z, Eminem, Lost Boyz, Nappy Roots, Biggie, Obie Trice, Outkast, Oakenfold, Tiesto, T.I., 50, etc...