Got the "Freakonomics":http://www.freakonomics.com/blog/2005/09/20/anybody-want-an-autographed-... bookplate today in the mail. If memory serves, this is the first book author's autograph I ever got.

It's quite inventive of them to make these "bookplates":http://en.wikipedia.org/wiki/Bookplate available. I've always like them in library books, and even think of getting my own at one time. (If I know Duane Bibby, I'd ask him to design mine)