"Seabiscuit", Laura Hillenbrand's best-selling book about the rags-to-riches story of a 1930s Thoroughbred champion and the colorful people associated with him, has been honored with the prestigious "William Hill Sports Book of the Year Award."Upon receiving notification of the honor, Hillenbrand said, "I am over the moon."Other finalists for the William Hill award were two books about boxing, one about sailing, and one whose subject is football.Hillenbrand's prizes for her book's honor include £10,000, a free £1,000 bet, and a specially-bound copy of the subject book. Seabiscuit was published in the U.S. by Random House and in the United Kingdom by Fourth Estate Ltd. It is also being made into a movie.On all of the major best-selling book lists throughout the year, Seabiscuit has been responsible for garnering considerable publicity for horse racing and its author. Hillenbrand's meticulous research and writing skills have also drawn attention to ways in which she copes with chronic fatigue syndrome.