http://glassbooth.org/ This site allows you to enter your opinions on topics, as well as the importance of topics to you, and matches you to a presidential candidate's stated platform.
This is cool because a lot of folks have gone "Oh, I thought I was going to get so-and-so", and instead they're getting results of a lot of people the media doesn't spend all its time covering.
I'm not interested in turning this into a presidential candidate hoo-hah (thus I'm not saying who I got even though I don't at all think it's controversial), I just thought it was a cool way to give potential voters an idea who they might consider voting for.