I am inspired by a post by Bill (William?) Ryan.  I responded to his post with a quick comment, but since submitting my response I have been somewhat introspective into the types of music I listen to and how productive I am.  Some music really grates on me while I'm working, whereas when not coding it's perfectly acceptable.  I have about 13 GB of WMA files on my media server (all ripped from CDs that I legitimately own) and it's quite a mix of songs.  While I have playlists and such, I'll often stream down songs randomly.  It gets weird sometimes to listen to one song with a pretty heavy beat to suddenly switch to Julie Andrews singing a song from Camelot and switch over to some dance beat and then a Latin ballad.  I love all the music, but I find that I'm substantially more productive if I a) don't listen to anything so I can focus on the code or b) listen to a certain genre of music or c) I forget, I'm listening to music right now and I'm distracted.

Anyhow, here's a sampling of some of my favorite music to code to.  I'd be interested in your comments and what kind of music gets you going during a code-jam session.

Favorites (preferred highlighted):
   Alanis Morrissette
   ABBA
   Alicia Keys
   Alison Krauss
   Avril Lavigne
   Barry Manilow
   Bon Jovi (especially from the 'Slippery When Wet' era)
   Cesaria Evora (enchanting voice)
   Depeche Mode
   Enigma
   Enya
   Eurythmics
   Faith Hill
   John Denver
   Josh Groban
   Julie Andrews
   Laura Pausini
   Lucero
   Luis Miguel
   Mana
   Maroon 5
   Norah Jones
   Peter Gabriel
   Ricardo Montaner
   Rick Wakeman
   Sarah Brightman
   Sheryl Crow
   Tears for Fears
   The Carpenters
   The Doors
   They Might Be Giants
   U2
   Weird Al Yankovic

There's a wide range of music I'm not mentioning here (such as classical music, Broadway (e.g. Les Miserables, Jekyll & Hyde, etc), and showtunes) because the list it too long and kinda all falls into the category of 'I love to listen to it anytime' anyway.

What music do you do your best work to?