A fun and interesting way of finding new music to listen to, or find out about has always been gnoosic.
Based on gnoosic now there’s musicmap which gives you a graphical representation of bands or artists you’ll probably like, based on the initial input you gave it.
The same thing can also be applied to books and movies, and it’s a bit scary actually when you enter one of your favorite movies and it turns out the following screen is showing a shit load of movies that also happen to be on your favorites list…
But still pretty sweet though.