Early in “The Fellowship of the Ring,” the first film in Peter Jackson’s monumental “Lord of the Rings” trilogy, the wizard Gandalf finds himself alone in a room with the trinket that could end the world. It lies gleaming on the floor, and Gandalf regards it with an attitude of fascinated fear. The audience feels a chill that neither Jackson’s vertiginous camera angles nor Ian McKellen’s arching eyebrows can fully explain. [More]