My favorite kinds of music are various forms of jazz (look at Jaco Pastorius' stuff, for example, or The Cinematic Orchestra, brit nu jazz), various forms of metal (I'm a big Dream Theater (especially John Petrucci) kinda guy, that's prog metal, I like Children of Bodom, that's death metal, and can't forget Apocalyptica, symphonic metal, and also let's throw in Rammstein, industrial metal or "neue deutsche härte", and I'm also a pretty big fan of certain dad metal bands like DIO), I like rap as well (I like Nas and Busta Rhymes a bunch), Dark Country (Blues Saraceno is my favorite), old punk rock (like Misfits), and sometimes you just gotta sit down and listen to something that can only be described as "cinematic" music, like E.S. Posthumus.
If you asked me what my favorite song is, I think it's a tie between Creed's "With Arms Wide Open" and Alice Cooper's "Feed My Frankenstein". Alice Cooper is an all time favorite of mine because his music can best be described as "halloween rock", but unlike Rob Zombie, who's like a "Friday the 13th" or "Nightmare at Elm Street" kinda halloween music, Alice Cooper is "Scooby Doo and the 13 Ghosts" or "Courage the Cowardly Dog" kinda halloween.