In bringing J.R.R. Tolkien's nearly unfilmable work to the screen, Jackson benefited from extraordinary special effects, evocative New Zealand locales, and an exceptionally well-chosen cast, but most of all from his own adaptation with co-writers Fran Walsh and Philippa Boyens, preserving Tolkien's vision and often his very words, but also making logical changes to accommodate the medium of film. While purists complained about these changes and about...