John Dezso Ratzenberger is an American actor, voice actor, director, producer, writer and entrepreneur. He is one of the most successful actors of all time in terms of box-office receipts. Ratzenberger is best known for portraying Cliff Clavin on the popular comedy series Cheers, for which he earned two Primetime Emmy nominations. He is the only voice actor to appear in every Pixar Animation Studios feature film, including Hamm in the Toy Story franchise, The Underminer in The Incredibles franchise, and Mack in the Cars franchise.
Ratzenberger began his entertainment career while living in London in the 1970s. He had minor film and television roles throughout the late 70s and early 1980s before creating, and then landing, the role of the know-it-all mailman Cliff Clavin on Cheers, a role he portrayed throughout the show’s eleven seasons. His first Pixar role was the voice of Hamm in Toy Story, and he has voiced Pixar characters in films and video games ever since. From 2004 to 2008 he hosted the TV documentary series Made in America. Outside of acting, he has promoted American entrepreneurship and manufacturing, and campaigned for several Republican candidates.
1989 • TV
2000 • TV
2005 • TV
2005 • TV
2024 • Movie
1995 • Movie
as Fritz (voice)
as Hamm (voice)
as Yeti (voice)
as John (voice)
as Mustafa (voice)
as Construction Foreman Tom (voice)
as Fritz (voice)
as Hamm (voice)
as Hamm (voice)
as Mack (voice)
as Gordon (voice)
as P.T. Flea (voice)
as Mack / Hamm Truck / Abominable Snow Plow / P.T. Flea Car (voice)
as Yeti (voice)
as Rootie (voice)
as Major Derlin
as Hamm (voice)
as Mr. Barnett
as Policeman
as Newshound
as Cliff Clavin / CGI Homer Simpson (voice)
2 episodes
as Stu Kirchoff
1 episodes
as Bill Schumacher
1 episodes
as Self - Contestant
14 episodes
as Cliff Clavin
1 episodes
as Glen
1 episodes
as Digby Yates
1 episodes
as Stan
1 episodes
as Walt Brewster
1 episodes
as Cliff Clavin
269 episodes
as Abe
1 episodes
as Himself
1 episodes
as Self
1 episodes
as Bob
1 episodes
as Self
2 episodes
as Merl
1 episodes
as Cliff Clavin
1 episodes
as Cliff Clavin
1 episodes
as Rigger (voice)
4 episodes
as Hank
1 episodes
Director
Director
Director
Director
Director
