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