By Jim Tune Pixar founder Ed Catmull had always dreamed of using computers to create a great animated movie. He achieved this with the release of Toy Story. “We”d been the first to make a movie with computers,” he wrote in his book Creativity, Inc., “and””even better””audiences were touched, and touched deeply by the story we told.” The problem? “Now that this goal had been reached, I had what I can only describe as a hollow, lost feeling.” Running a company didn”t seem to be enough. Catmull began to scratch beneath the surface, and realized things weren”t as healthy at