Animation is not a genre. Director Brad Bird will punch you in the face if you say that. That’s because animation isn’t just light humor, fluffy songs, and dance numbers; animation is an art form that can be used to tell any story in any genre. This video, edited by Kees van Dijkhuizen Jr., illustrates Bird’s points about what makes animation great using his audio commentaries for scenes in The Iron Giant, The Incredibles, and Ratatouille.
Source: Gizmodo – What Makes Animation Great