I told Monica about this site the other day, but figured I should share with the rest of you. You submit a sample of your writing, and it compares you to an author.
Just for fun. Give it a whirl. Depending on the sample used, I've had several results. Though the most amusing is the fact that my news scripts mostly come back as Kurt Vonnegut. LOL. My random journal entries about shit in my head have compared me to David Foster Wallace and William Gibson.