I like just about anything, but I mostly listen to contemporary Christian. My favorite band (that I'm not in or know personally) has been Relient K for a while now, but I'm starting to like Jars of Clay more and more.
I also like Casting Crowns, dC talk, Audio Adrenaline, ApologetiX, Chris Tomlin, David Crowder, FFH, Hawk Nelson, Jeremy Camp, Michael W Smith, Nicole Nordeman, Newsboys, Rascal Flatts, Stellar Kart, Switchfoot, Third Day, tobyMac, The Fightin' Texas Aggie Band, and, of course, the Seale Sisters.