
Filmography

The Simpsons
1989 · Reverend Jim Ignatowski (voice)

NCIS
2003 · Joseph Smith

Saturday Night Live
1975 · Self (uncredited)

El hormiguero
2006 · Self - Guest

Jimmy Kimmel Live!
2003 · Self, Self - Guest

Law & Order: Criminal Intent
2001 · Carmine

The Big Bang Theory
2007 · Theodore

King of the Hill
1997 · Smitty (voice)

The West Wing
1999 · Professor Lawrence Lessig

Cheers
1982 · Phillip Semenko

Fringe
2008 · Roscoe Joyce

Psych
2006 · Martin Kahn

Malcolm in the Middle
2000 · Walter

Wednesday
2022 · Professor Orloff

Hacks
2021 · Larry Arbuckle

Numb3rs
2005 · Ross Moore

The Mandalorian
2019 · Commissioner Helgait

Chuck
2007 · Dr. Leo Dreyfus

Barney Miller
1975 · Arnold Scully, Vincent Carew

American Playhouse
1982 · Paul

Spin City
1996 · Owen Kingston

Tony Awards
1956 · Self - Performer (uncredited)

Taxi
1978 · Jim Ignatowski

Back to the Future
1985 · Emmett Brown
The Tony Danza Show
2004 · Self

12 Monkeys
2015 · The Missionary, The Missionary (uncredited)

Cyberchase
2002 · Hacker (voice)

A Million Little Things
2018 · Christopher Lloyd

The Conners
2018 · Lou Vitore

The Alan Titchmarsh Show
2007 · Self

Raising Hope
2010 · Dennis Powers

Stars in the House
2020 · Self

R. L. Stine's The Haunting Hour
2010 · Grandpa Walt Montgomery

Amazing Stories
1985 · Professor B.O.Beanes

Ed
2000 · Burt Kiffle

One Flew Over the Cuckoo's Nest
1975 · Max Taber

A.P. Bio
2018 · Melvin

Happy's Place
2024 · Clive

Over the Garden Wall
2014 · The Woodsman (voice)

Back to the Future Part II
1989 · Doctor Emmett Brown

Masters of Horror
2005 · Actor

Nobody
2021 · David Mansell

Nobody 2
2025 · David Mansell

The Adams Chronicles
1976 · Tsar Alexandre I

Knuckles
2024 · Chief Pachacamac (voice)

Clue
1985 · Professor Plum

Fallen Angels
1993 · Continental Op

The Addams Family
1991 · Uncle Fester

Back to the Future Part III
1990 · Doctor Emmett Brown

Who Framed Roger Rabbit
1988 · Judge Doom

Roseanne
1988 · Lou

Sin City: A Dame to Kill For
2014 · Kroenig

Addams Family Values
1993 · Uncle Fester

Back to the Future
1991 · Emmett Brown

Reunited Apart
2020 · Self

Anastasia
1997 · Rasputin (voice)

The Michael J. Fox Show
2013 · Principal McTavish

A Million Ways to Die in the West
2014 · Doc Brown

Everybody's Live with John Mulaney
2025 · Self - Willy Loman, Weston Playhouse, Weston, VT, 2010 (Pre-Tape Segment)

Street Hawk
1985 · Anthony Corrido

Tremors
2003 · Dr. Cletus Poffenberger

Head Case
2007 · Self

Scholastic Storybook Treasures: The Classic Collection
TBA · Actor

Piranha 3D
2010 · Mr. Goodman

Dennis the Menace
1993 · Switchblade Sam

Stacked
2005 · Harold March

DuckTales: The Movie - Treasure of the Lost Lamp
1990 · Merlock (voice)

James Cameron's Story of Science Fiction
2018 · Self

The Real History of Science Fiction
2014 · Self

Deadly Games
1995 · Sebastian Jackal

Hulk Hogan: Real American
2026 · Self

Piranha 3DD
2012 · Mr. Goodman

The Adventures of Buckaroo Banzai Across the 8th Dimension
1984 · John Bigboote

Going in Style
2017 · Milton Kupchak

Clubhouse
2004 · Lou Russo

The Postman Always Rings Twice
1981 · The Salesman

Man on the Moon
1999 · Self (uncredited)

Star Trek III: The Search for Spock
1984 · Cmdr. Kruge

Alice in Wonderland
1999 · White Knight

Meteor
2009 · Prof. Daniel Lehman

The Tale of Despereaux
2008 · Hovis (voice)

Things to Do in Denver When You're Dead
1995 · Pieces

Back to the Future: The Hill Valley Chronicles
2018 · Dr. Emmet Brown

The Pagemaster
1994 · The Pagemaster (voice) / Mr. Dewey

Angels in the Outfield
1994 · Al the Angel

Interstate 60
2002 · Ray

I Dream
2004 · Professor Toone

The Word
1978 · Hans Bogardus

Self Reliance
2024 · Dennis Walcott

Santa Buddies
2009 · Stan Cruge

The Witches of Oz
2011 · The Wizard of Oz

Hey Arnold! The Movie
2002 · Coroner (voice)

My Favorite Martian
1999 · Uncle Martin

To Be or Not to Be
1983 · Capt. Schultz

Mr. Mom
1983 · Larry

Knights of Bloodsteel
2009 · Tesselink

Baby Geniuses
1999 · Heep

Fly Me to the Moon
2008 · Amos (voice)

Buenas noches
2014 · Self
Semi-Tough
1980 · Actor, Frank Mullens

Goin' South
1978 · Towfield

Wit
2001 · Dr. Harvey Kelekian

The Tender Bar
2021 · Grandpa Maguire

Eight Men Out
1988 · Bill Burns

I Am Not a Serial Killer
2016 · Mr. Crowley

Suburban Commando
1991 · Charlie Wilcox

Jack and the Beanstalk
2009 · Headmaster

Camp Nowhere
1994 · Dennis Van Welker

Muse
2017 · Rauschen

The Lady in Red
1979 · Frognose

Expedition: Back To The Future
2021 · Self

The Dream Team
1989 · Henry Sikorsky

Just in Time for Christmas
2015 · Grandpa Bob

Live from Studio Five
2009 · Self

Love, Wedding, Marriage
2011 · Dr. George

The Earth Day Special
1990 · Emmett Brown

Next Stop, Christmas
2021 · Ticket Agent/Conductor

Butch and Sundance: The Early Days
1979 · Bill Carver

Radioland Murders
1994 · Zoltan

Foodfight!
2012 · Mr. Clipboard (voice)

Spirit Halloween: The Movie
2022 · Alex Windsor

Quicksilver Highway
1997 · Aaron Quicksilver

The Right to Remain Silent
1996 · Johnny Benjamin

The Onion Field
1979 · Jailhouse Lawyer

Zodiac
2014 · Harry Setag

Call of the Wild
2009 · 'Grandpa' Bill Hale

Nandor Fodor and the Talking Mongoose
2023 · Dr. Harry Price

InSight
2011 · Shep

Blood Lake: Attack of the Killer Lampreys
2014 · Mayor Akerman

Rent-a-Kid
1995 · Lawrence 'Larry' Kayvey

The Legend of the Lone Ranger
1981 · Maj. Bartholomew 'Butch' Cavendish

Another Man, Another Chance
1977 · Jesse James (uncredited)

Dorothy and the Witches of Oz
2012 · The Wizard Of Oz

Joy of Sex
1984 · Coach Hindenberg

National Lampoon's Movie Madness
1982 · Samuel Starkman ("Municipalians")

Queen Bees
2021 · Arthur Lane

Walk Like a Man
1987 · Reggie Shand / Henry Shand

On the Edge
2001 · Attorney Bum (segment "Happy Birthday")

50 Years of Star Trek
2016 · Self

Boundaries
2018 · Stanley

The Real Blonde
1998 · Ernst

Guns & Moses
2025 · Sol Fassbinder

Here Comes Peter Cottontail: The Movie
2005 · Seymour S. Sassafras (voice)

Track 29
1988 · Henry Henry

A Very Sunny Christmas
2009 · Santa Claus John #2 (uncredited)

Senior Moment
2021 · Sal Spinelli

Back in Time
2015 · Self

Bad Girls from Valley High
2005 · Mr. Chauncey

Donald Trump's The Art of the Deal: The Movie
2016 · Doc Brown

The Oogieloves in the Big Balloon Adventure
2012 · Lero Sombrero

The Ransom of Red Chief
1998 · Sam Howard

The Adventures of Mickey Matson and the Copperhead Conspiracy
2012 · Grandpa Jack

Man and Witch: The Dance of a Thousand Steps
2024 · The Alchemist

Angels in the Endzone
1997 · Al

Amazing Stories
1986 · R. Beanes

Who Done It: The Clue Documentary
2022 · Self (archive footage)

Twenty Bucks
1993 · Jimmy

Camp Hideout
2023 · Falco

The Sound
2017 · Clinton Jones

Pirate's Code: The Adventures of Mickey Matson
2014 · Grandpa Jack

Schizoid
1980 · Gilbert

Dead Before Dawn
2012 · Horus Galloway

The Secrets of the 'Back to the Future' Trilogy
1990 · Dr. Emmett Brown (archive footage)

Must See TV: An All Star Tribute to James Burrows
2016 · Self

Back To the Present: The Special
2015 · Actor

Last Call
2012 · Pete

Making a Killing
2018 · Lloyd Mickey

Dead Ahead: The Exxon Valdez Disaster
1992 · Frank Iarossi

Miracles
1986 · Harry

Flakes
2007 · Willie

When Good Ghouls Go Bad
2001 · Uncle Fred Walker

Wish You Were Dead
2002 · Bruce

Snowmen
2010 · The Caretaker

The Movers
TBA · Henry Solomon

Arthur Hailey's Detective
2005 · Anderson in Launderette

Why Me?
1990 · Bruno Daley

Dinner at Fred's
1997 · Dad

Dr. Jack & Mr. Nicholson
2019 · Self

88
2015 · Cyrus

Keith Lemon's Back t'Future Tribute
2015 · Self

It Came from the Sky
1999 · Jarvis Moody

Money on the Side
1982 · Sergeant Stampone

Valerie on the Stairs
2006 · Everett Neely

The Animated Adventures of Tom Sawyer
1998 · Judge Thatcher (voice)

The Boat Builder
2015 · Abner

Looking Back to the Future
2009 · Self, Thanks

Space Case
2001 · Narrator (voice)

Making of One Flew Over the Cuckoo's Nest
2009 · Self

The Making of 'The Pagemaster'
1994 · Mr. Dewey - Host

The Chateau Meroux
2011 · Nathan

Lacy and the Mississippi Queen
1978 · Jennings

Camelot: Live from Lincoln Center
2008 · King Pellinore

Sid the Science Kid: The Movie
2013 · Dr. Bonabodon (voice)

Cadillac Ranch
1996 · Wood Grimes

Street Hawk: The Movie
1984 · Anthony Corrido

Legend of the White Horse
1987 · Jim Martin

The Narrative of Victor Karloch
2012 · Victor Karloch

A Perfect Day
2006 · Michael

Once Upon a Time… One Flew Over the Cuckoo's Nest
2011 · Self

Haunted Lighthouse 4-D
2003 · Cap'n Jack

Cold Moon
2016 · James Redfield

Changing Habits
1997 · Theo Teagarden

Excuse Me for Living
2012 · Lars
Looking Back at the Future
2006 · Himself

The Fantastic Seven
1979 · Skip Hartman

Tales from the Future
2010 · Self

T Bone N Weasel
1992 · Weasel

Doc Brown Saves the World
2015 · Emmett Brown

Merry Christmas Space Case
2003 · Narrator (voice)

Admissions
2004 · Steward Worthy

The Emperor's Treasure
1999 · Lord Imaru (voice)

September Gun
1983 · Jack Brian

Kids World
2001 · Leo

The Big Time
2002 · Doc Powers
Mr. Payback: An Interactive Movie
1995 · Ed Jarvis
Untitled Lani Pixels Project
TBA · Grandpa (voice)

Wildchat
2019 · Actor

Car Crash: The Delorean Story
2004 · Himself

Pilgrim, Farewell
1980 · Paul

The One I Wrote for You
2014 · Pop

Adventures of Serial Buddies
2011 · Dr. Von Gearheart

The Macabre World of Lavender Williams
2009 · Lester (voice)

The Black Marble
1980 · Arnold's Collector

King Lear
2021 · King Lear

Convergence
2000 · Morley Allen

The Haunted Swordsman
2019 · The Black Monk

Completely Cuckoo
1997 · Self

Back to the Future: Making the Trilogy
2002 · Self - Doc Emmett Brown

The Cowboy and the Ballerina
1984 · Woody
That Guy... Who Was In That Thing 3: Trek Stars
2019 · Self

Anything but Christmas
2012 · Harry
Say It Ain't Solo
2012 · Self
Cadaver
2012 · Cadaver

Three Warriors
1977 · Steve Chaffey

Back to the Future: The Ride
1992 · Christopher Lloyd

Chasing Destiny
2001 · Jet James

Magic
2010 · Magic (voice)

The Cyberchase Movie
2017 · The Hacker (voice)

Tankhouse
2022 · Buford

One by One
2018 · Harvey

ReRUN
2018 · George Benson (old)

In Search of Dr. Seuss
1994 · Mr. Hunch