For people in need of a good classical station who can listen online, this one is my current favorite. I'm listening to it right now...

http://theclassicalstation.org/internet.shtml

I can listen to baroque music all day long. It puts me in just the right frame of mind and the right mood for most things. If I want a change of pace, and if I want my heartstrings pulled, Vaughan Williams is a good choice, but there are several others. Bach is probably my favorite for just about everything, if I have to pick a favorite (but I'd rather not). I like several of the dark and moody composers like Prokofiev and Leos Janacek (his Sinfonietta) when I'm in the mood for something dark and moody. I like a lot of early music, but I'm not entirely thrilled with some of the ways people have been interpreting that music in recent years. I miss the New York Pro Musica.