Superathlete Michael Phelps is writing a book! It's coming out really soon -- in December! (Just in time for those holiday wish lists.) According to trendhunter.com, the book will "cover Phelps’ philosophies on training and competition. It’ll also delve deeper into his personal life, discussing the challenges of coping with an attention-deficit disorder and being raised by a single mom."

Another Olympian, Coach K, is also working on a book [scroll down for info], this one with his daugher. It's about coaching Team USA to gold at the 2008 Bejing games.

And finally, Serena Williams just signed a seven figure book deal to write her memoirs. This one will come out in 2009. Did you know she's won NINE grand slams?