I ditched Pandora a long time ago for the sixty one: <a href="http://www.thesixtyone.com/" rel="nofollow">http://www.thesixtyone.com/</a><p>I like the moods->remix for when I'm programming.
My Miles Davis station is great for that. The station "Groove Salad" on soma.fm is also a good one--depending on your tastes, they may have some other channels that work better for you.