As far as newer rock or metal, Shadows Fall and Trivium are my two favorite. There are a few other newer rock/metal bands I listen to, but not as much as them. Aside from that, I love metal and classic rock, and the blues.
Metallica, Pantera, Iron Maiden, Lynyrd Skynyrd, Stevie Ray Vaughn, Tool, Eagles, Jimi Hendrix, Van Halen, Boston, .38 Special, Ted Nugent, BLACK LABEL SOCIETY!!! (Im big on Zakk Wylde), Ozzy/Sabbath, Godsmack, Alice in Chains, Pearl Jam, The Door, Pink Floyd, some Megadeth... and a bunch of others.
What about you?