The article focuses on application of computer animation in feature films. "Toy Story," the first full-length computer-generated animated feature film, which was released in 1995, established itself as a visual benchmark for computer graphics hardware and software development. Toy-Story-quality imagery on a PC, game developers wanted to know how they could deliver Toy-Story-quality animation on game consoles; and robotics researchers wanted to know how they could build artificial intelligence into their machines to achieve Toy-Story-quality lifelike characters. People at animation studio Pixar Co., while trying to answer the question, also sought to create scenes even more complex, images more wondrous, and characters more fluid. The movie-making collaboration between science and art involves a technical staff pushing for visual complexity and realism-in the service of the story and ultimately the believability of the characters and the environments used to tell that story. INSET: Five Key Principles of Carton Character Animation.