Just about everything except hip-hop, Country or Rap.
My preferences are dominated by rock however. British Classic Rock, like The Who, Led Zeppelin, The Beatles (some of their songs) Etc. As well as american bands such as Aerosmith, Joan Jett, and others. Jimi Hendrix, Bon Jovi, a lot of classic Rock.
I like the older stuff (for me, anyway.
) too, such as Elvis and Johnny Cash and even some jazz. (Miles Davis)
Some Metal Bands (Usually Christian Metal, since I find the rest a bit... dark. Though good music all the same) like August Burns Red, Demon Hunter, and As I lay Dying are at the top of my list for the heavy stuff.
When it comes to modern Rock, I don't have a whole lot of favorites, but Chris Cornell, Disciple, and a few others come to mind.