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.
Known For
Inside Out 2
(2024)
Fritz (voice)
Inside Out
(2015)
Fritz (voice)
Toy Story
(1995)
Hamm (voice)
Superman
(1978)
1st Controller
Monsters, Inc.
(2001)
Yeti (voice)
Up
(2009)
Construction Foreman Tom (voice)
Coco
(2017)
Juan Ortodoncia (voice)
Ratatouille
(2007)
Mustafa (voice)
Finding Nemo
(2003)
Fish School (voice)
Toy Story 2
(1999)
Hamm the Piggy Bank (voice)
WALL·E
(2008)
John (voice)
Luck
(2022)
Rootie (voice)
Toy Story 4
(2019)
Hamm (voice)
Cars 3
(2017)
Mack (voice)
The Incredibles
(2004)
Underminer (voice)
Cars 2
(2011)
Mack (voice)
Full Filmography
Acting
The Ritz
(1976)
Patron
Twilight's Last Gleaming
(1977)
Sgt. Kopecki
A Bridge Too Far
(1977)
U.S. Lieutenant
Valentino
(1977)
Newshound
Warlords of Atlantis
(1978)
Fenn
Superman
(1978)
1st Controller
Arabian Adventure
(1979)
Achmed
Hanover Street
(1979)
Sgt. John Lucas
Yanks
(1979)
Cpl Cook
The Bitch
(1979)
Hal Leonard
The Empire Strikes Back
(1980)
Major Derlin
Motel Hell
(1980)
Drummer
Superman II
(1980)
Controller
Outland
(1981)
Tarlow
Ragtime
(1981)
Policeman
The Good Soldier
(1981)
Jimmy
Reds
(1981)
Communist Leader (uncredited)
Warlords of the 21st Century
(1982)
Rusty
Gandhi
(1982)
American Lieutenant
Firefox
(1982)
Chief Peck
Rating Notman
(1982)
Right of Way
(1983)
Policeman
Protocol
(1984)
Security Guard on TV
The Falcon and the Snowman
(1985)
Detective
Combat Academy
(1986)
Mr. Barnett
House II: The Second Story
(1987)
Bill
Timestalkers
(1987)
General Joe Brodsky
Going to the Chapel
(1988)
Mickey's 60th Birthday
(1988)
Cliff Clavin
She's Having a Baby
(1988)
John Ratzenberger (uncredited)
Camp Cucamonga
(1990)
Marvin Schector
Disneyland's 35th Anniversary Special
(1990)
Self
The Earth Day Special
(1990)
Cliff Clavin
Toy Story
(1995)
Hamm (voice)
The Story Behind 'Toy Story'
(1996)
Self
Tiny Toy Stories
(1996)
Hamm (voice)
Bad Day on the Block
(1997)
Al Calavito
That Darn Cat
(1997)
Dusty
One Night Stand
(1997)
Phil
Dog's Best Friend
(1997)
Goat (voice)
A Bug's Life
(1998)
P.T. Flea (voice)
Monty Python: Live at Aspen
(1998)
Audience Member (uncredited)
Toy Story 2
(1999)
Hamm the Piggy Bank (voice)
A Fare to Remember
(1999)
Mickey
Tick Tock
(2000)
Clay Fairfield, P.I.
Monsters, Inc.
(2001)
Yeti (voice)
Determination of Death
(2001)
Charlie Halloran
NBC 75th Anniversary Special
(2002)
Self
Finding Nemo
(2003)
Fish School (voice)
The Art of 'Spirited Away'
(2003)
Self
The Incredibles
(2004)
Underminer (voice)
Mystery Woman: Redemption
(2006)
Jim Carter
Cars
(2006)
Mack / Hamm Car / Abominable Snow Plow / P.T. Flea Car (voice)
Superman II: The Richard Donner Cut
(2006)
Controller #1
Cars Wal-Mart Exclusive Geared UP
(2006)
Ratatouille
(2007)
Mustafa (voice)
Your Friend the Rat
(2007)
P.T. Flea (voice) (uncredited)
The Pixar Story
(2007)
Yeti (voice) (archive footage)
Our First Christmas
(2008)
Joe Noll
WALL·E
(2008)
John (voice)
The Village Barbershop
(2008)
Art Leroldi
Up
(2009)
Construction Foreman Tom (voice)
Toy Story 3
(2010)
Hamm (voice)
What if...
(2010)
Mike the Angel
Cars 2
(2011)
Mack (voice)
Hawaiian Vacation
(2011)
Hamm (voice)
Small Fry
(2011)
Hamm (voice)
Lt. Dan Band: For the Common Good
(2011)
Self
WWJD II: The Woodcarver
(2012)
Ernest Otto
Fixing Pete
(2012)
Clayton
Brave
(2012)
Gordon (voice)
Partysaurus Rex
(2012)
Hamm (voice)
Matchmaker Santa
(2012)
George
Local Commercial
(2012)
Earl T. Barnum
Monsters University
(2013)
Yeti (voice)
Super Buddies
(2013)
Marvin 'Gramps' Livingstone
In The Name of God
(2013)
Reverend Thomas
Planes
(2013)
Harland (voice)
Planes: Fire & Rescue
(2014)
Brodi (voice)
The Santa Con
(2014)
Warden
How Murray Saved Christmas
(2014)
Officer Bender (voice)
A Christmas Mystery
(2014)
Logan Walker
Grace of God
(2014)
Russell Madness
(2015)
Mick Vaughn
Inside Out
(2015)
Fritz (voice)
The Good Dinosaur
(2015)
Earl (voice)
Toy Story at 20: To Infinity and Beyond
(2015)
Self
Monkey Up
(2016)
Mr. Hartz
Must See TV: An All Star Tribute to James Burrows
(2016)
Self
Change of Heart
(2016)
Dr. Charles Burke
Finding Dory
(2016)
Husband Crab (Bill) (voice)
Pup Star
(2016)
Mutt (voice)
Cars 3
(2017)
Mack (voice)
Coco
(2017)
Juan Ortodoncia (voice)
Pup Star: Better 2Gether
(2017)
Salty (voice)
Incredibles 2
(2018)
Underminer (voice)
Shifting Gears
(2018)
Conrad Baines
Pup Star: World Tour
(2018)
Grandpa Growl (voice)
Toy Story 4
(2019)
Hamm (voice)
Forky Asks a Question: What Is Money?
(2019)
Hamm (voice)
Forky Asks a Question: What Is a Friend?
(2019)
Hamm (voice)
Project: Puppies for Christmas
(2019)
Daniel Nilwater
Forky Asks a Question: What Is Reading?
(2020)
Hamm (voice)
Onward
(2020)
Construction Worker Fennwick (voice)
Miracle in East Texas
(2020)
Dad Everett
In Search of Tomorrow
(2022)
Self - Interviewee
Luck
(2022)
Rootie (voice)
Tapawingo
(2023)
Tom Roan
Inside Out 2
(2024)
Fritz (voice)