I listen to country, folk, celtic, classical, jazz, classic rock, etc. etc. I guess that means pretty much anything except what's on the regular radio stations. But that wouldn't be accurate either.
Favorites--the folk groups/singers I listed in the other thread, which are Cliar, Battlefield Band, Kate Rusby, John McCusker, malinky (yep, lowercase m), and Anne Martin. Anne Martin and Cliar sing in Scottish Gaehlidh (which I can never spell), malinky sings mainly Scottish lowland folk, and John McCusker is a Scot who plays fiddle, flute, and several other instruments I can't remember. He plays both solo and to back up Kate, who sings mainly English folk (I think she's from Yorkshire--somewhere up north in England, at least, which makes her accent really cool), but she also dabbles in anything generally British or Irish, and I've even got her singing an American song on one cd.
Other favorites, Alison Kraus, Paul Simon (both with Garfunkel and without), Credence Clearwater Revival, Beach Boys (if I'm in a nostalgic mood--reminds me of high school), John Michael Montgomery, Pam Tillis, Clint Black, Dixie Chicks, John Denver, Harry Connick Jr., Natalie Cole, Tommy Dorsey, Glenn Miller, Ella Fitzgerald, Louie Armstrong, Billie Holiday...
I love old jazz and big band (I play trumpet, played trombone, mellophone, and French horn in high school, so I love playing them--have this great brass band cd I just got that plays all the marches we used to play in band, and some I never had the skill for, like Flight of the Bumblebee.)