Zephyrus
Tyrants and Slaves
Pandora Internet Radio - you tell them what you like, they play stuff like it. Great site for finding new bands or chilling to music. They have loads of metal, but also other stuff.
Rather limited, though. And it doesn't recognize a lot of the bands I would enter into its engine. It doesn't even accept Borknagar.
I do credit Pandora for my original discovery of Kaamos.