Everyone's input on music-listening habits have been great. I've enjoyed reading them all! What an eclectic mix, even with the same individuals.

I have different music for different moods and areas of my house.
My meditation/art room is stocked full of new age and meditation music. I also listen to classical piano or guitar music on the computer when I'm painting.
In my car I have a CD collection that I rotate back and forth in the player. I almost always keep the same 3 Prince's Greatest Hits CDs in the Player and rotate...
James Taylor
Christina Aguilera
Tori Amos
Joni Mitchell
Norah Jones
Seal
Gap Band
SOS Band
The Time
Greatest Funk Hits
Michael McDonald
Natalie Cole
Peter Gabriel
John Mayer
Santana
Then in the house by my stereo I have a huge collection of Jazz such as...
Pat Metheney
Fresh Aire
Earl Klugh
And soooooo many more that I couldn't begin to list.
But to be perfectly honest, I don't listen to music much during the day, but rather prefer silence unless I'm meditating and then oddly enough use a guided meditation tape. I mostly listen to music when I drive in the car.