Moviegoers will soon be able to decide which films to see based not on stars or tomatoes, but on how well they're being traded by investors. Two investment firms are working to develop a futures market for movie derivatives that…

To learn more about James Cameron's new film and the director himself, Jeffrey Brown speaks to Rebecca Keegan, who spent time on the set of "Avatar" and wrote the new biography, "The Futurist: The Life and Films of James Cameron."…