Stephanie Burgis (who's book An Improper Magyk comes out next year - in April - which I've been dying to read, doesn't it look fabulous?)
Fake E-mails of famous characters. There are three ranging from Elizabeth Bennet, to Voldemort, to Sauron, to Darth Vader to Julius Ceasar, to James Bond. They're inventive, funny, clever, and a genius idea. I hope there's more coming.