How sound creates character

One of my favorite animated films is Pixar's "WALL-E." I find the way in which the directors and animators of the film bring such life and character to these futuristic robots amazing. The following clip is an interview with Andrew Stanton (Finding Nemo, Monsters Inc, Toy Story). The sound design in "WALL-E" is incredible and Stanton gives a little insight into how he used sound to develop the characters in the film. Often times I find myself marveling at computer graphics in films, but this interview shows how sound is just as important as image in animation.