For the most part, I like all kinds of music. Except country. And I loathe slow songs. Other than that, rock and classical are tied for first place as my favorite music genre. Lately, I've been branching out and listening to a lot of K-Pop and J-Rock. Mostly, I listen to my iPod, but I'll also tune into Pandora (which I usually have set to Two Steps from Hell radio) or last.fm.
A few favorites from my writing playlist:
What I listen to usually depends on the tone I'm going for in the book. For certain types of scenes, I listen to different types of music. For example, if I'm writing an epic battle scene or a car chase, I'd listen to rock or something from the 300 soundtrack. For lovey-dovey or humorous scenes, I would obviously listen to something more upbeat. My writing playlist is mostly comprised of movie soundtracks:
Harry Potter - John Williams/Patrick Doyle/Nicholas Hooper
Lord of the Rings - Howard Shore (I find myself listening to this the most. It matches my work-in-progress the best)
King Arthur - Hans Zimmer (I looove Hans Zimmer)
300 - Tyler Bates
Narnia - Harry Gregson-Williams
Final Fantasy VII: Advent Children - Nobuo Uematsu
And one game soundtrack: Final Fantasy VII: Crisis Core - Takeharu Ishimoto (though I haven't played the game).
I do a lot of dorky things, like compile playlists for each of my main characters (Kevin, Jordan, Mark) to help me get to know them better and to better establish their voice. I also like to make playlists of what, if my novel is ever adapted into a movie, the soundtrack would be. Also, if you haven't yet noticed, I like to post on my blog (right sidebar) what music I'm currently addicted to.
Do you listen to music while you read/write? If so, what's on your playlist?