All three of the movies at the Tropic Cinema right now started out as books -- on the big screen is the big seller, "The Kite Runner," based on the novel by Khaled Hosseini. But the other two movies, both based on nonfiction books, have been getting boffo reviews: "The Diving Bell and the Butterfly," the true story of a French editor who suffers a stroke and manages to write a book through a system of the only voluntary motion he has left -- blinking one eye. Because I'm a documentary fan, I'm looking forward to "The Rape of Europa," based on the 1994 book about the Nazi pillaging of European art during World War II. See you on Eaton Street ...