In anticipation of the release of The Simpsons Movie, comedians, writers and critics pay tribute to the cartoon many claim to be the best programme ever made. Since its first appearance on American television 20 years ago the show has been a phenomenonal success, collecting many awards and attracting millions of fans. Ricky Gervais, who wrote and starred in an episode of the series, reveals why he loves the show, and Nick Park explains how it revolutionised the world of animation. Show less