I just came across this website. Kind of fun. It recommends music to you based on what you like. One way to play is go [here]
And enter a name, click continue, and will display a graphic filled with other artist names that it finds similar.
It is described as this:
Gnod is a self-adapting system that learns about the outer world by asking its visitors what they like and what they don’t like. In this instance of gnod all is about music. Gnod is kind of a search engine for music you don’t know about.
It also does books and movies. To start at the start, go [here]
There’s even a German version.