I've been meaning to tell you about a site I love. It is called literature-map.com and is a fantastic means by which you can find authors similar to the ones you like already.
The idea is simple. You type in the name of an author you like, press a button and, hey-presto, a constallation of stars explodes onto your screen before settling down into a galaxy of similar authors. Those closest to your named writer are most like him or her, those furthest similar but less so.
I love it. Try it. If anyone knows how it works please let me know.
PS It also works for films.