As a young man, Ed Catmull had a dream: to make the world's first computer-animated movie. He nurtured that dream first as a Ph. D. student at the University of Utah, where many computer science pioneers got their start, and then forged an early partnership with George Lucas that led, indirectly, to his founding Pixar with Steve Jobs and John Lasseter in 1986. Nine years later, Toy Story was released, changing animation forever. Since then, Pixar...