you may also like http://last.fm and http://pandorafm.real-ity.com/, which puts last.fm and pandora together (see http://www.techcrunch.com/2006/04/21/update-on-pandoralastfm-mashup/) or http://www.musicovery.com/.

Also see here in general for music recommendation engines: http://www.thebeststuffintheworld.com/category/music-recommendation-engine.

Of course I'm not suggesting to stop asking other people what hey like and you could like too, but that engines are fuled by peoples tastes. thebeststuffintheworld is also a nice place tofind other interesting stuff.

I think my music taste is totally different, but you may give a try to portishead, massive attack and air (french band), which is electronic music. In the rock category, I could point you to some german bands like "die Ärzte", "die toten Hosen", "Selig" or "Guano Apes". Guano Apes sings english, may also be known in the usa, don't know.

Bye, Olaf.