You might think from your mailbox that letter-writing is on the wane. But a new memoir by Mary-Louise Parker may just revive the art. While she is known for her work as an award-winning actress--including roles on Broadway, in "Weeds," "Angels in America" and "The West Wing"--her memoir is comprised entirely of letters to the men in her life, including her father, ex-boyfriends, teachers and the future man who loves her daughter. It's called "Dear Mr. You."