There are so many books, movies and CDs out there that it’s impossible to sample everything you might be interested in. I found a pretty cool site called Gnod that makes it a little easier to narrow the field.
In a nutshell, it surveys what people like, and then it tries to assemble lists of what you might like based on the preferences that other people have cited. It’s similar to Amazon (and they appear to have some sort of unholy alliance with the weasels at Amazon), but this is much cooler. I really like the graphical representation that it produces to show you the relation of other works to the one you cited. Here’s an example of three that it created for me, based on the item that I told it I like:
Movie
Band
Writer
It’s not completely accurate, but it’s a pretty cool toy. It also came up with a few suggestions that I’ll check out.