John Ratzenberger is an American comedian and actor best known for playing Cliff Clavin in the TV show Cheers. Having won several accolades including prestigious nominations, Ratzenberger is the only actor to have appeared in all of Pixar’s feature films. His association with Pixar also extends into extensive voice roles in popular animation films like the Toy Story, The Incredibles and Cars franchises. In 1971, he helped form and organize an improvisational comedy troupe called "Sal's Meat Market".Read more