If you were approached by a top Hollywood producer saying that he/she desperately needed you to help in the development of a movie (because you're taste is so darn good). He/she would take care of all the funding but you would get to pick the script and the actors. One stipulation, the movie has to be based off of a book. Any book, any genre, but a book.
Which book would you make into a movie and why? Who would star as the protagonist?