120 days and I still think of this thread.
http://www.allmusic.com/^I really like this one. Lots of interesting news, and allows me to browse music without listening to it. Lots of info on artists, but I am unsure of the accuracy of all these descriptions, much like Pandora. That said, Official Band Websites would be the best place to read musician info. Unless you're looking up the White Stripes:) Also fan websites, big ones, have a lot of stories and info.
I also like the Itcher website, I mentioned it in the apps thread. . I forgot the other movie comparison/recommendation website I used to use. . and it's not rotten tomatoes or IMDB (which I never use for movie recommendations. . it's the only website used popularly, which means it often recommends poo movies)