Christopher Lloyd

NCIS

Joseph Smith

The Simpsons

Reverend Jim Ignatowski (voice)

Cheers

Phillip Semenko

The West Wing

Professor Lawrence Lessig

Fringe

Roscoe Joyce

Law & Order: Criminal Intent

Carmine

Chuck

Dr. Leo Dreyfus

King of the Hill

Smitty (voice)

Psych

Martin Kahn

Malcolm in the Middle

Walter

Wednesday

Professor Orloff

The Big Bang Theory

Theodore

Numb3rs

Ross Moore

Spin City

Owen Kingston

Taxi

Reverend Jim Ignatowski

Barney Miller

Arnold Scully

Hacks

Larry Arbuckle

The Mandalorian

Commissioner Helgait

Raising Hope

Dennis Powers

12 Monkeys

The Missionary

The Conners

Lou Vitore

Amazing Stories

Professor B.O.Beanes

R. L. Stine's The Haunting Hour

Grandpa Walt Montgomery

Back to the Future

Emmett Brown

Stars in the House

Self

Nobody 2

David Mansell

Ed

Burt Kiffle

Cyberchase

Hacker (voice)

A.P. Bio

Melvin

Nobody

David Mansell

A Million Little Things

Christopher Lloyd

Fallen Angels

Continental Op

Masters of Horror

One Flew Over the Cuckoo's Nest

Max Taber

Over the Garden Wall

The Woodsman (voice)

Knuckles

Chief Pachacamac (voice)

Back to the Future Part II

Doctor Emmett Brown

Happy's Place

Clive

Tremors

Dr. Cletus Poffenberger

Head Case

Self

James Cameron's Story of Science Fiction

Self

Anastasia

Rasputin (voice)

Street Hawk

Anthony Corrido

Sin City: A Dame to Kill For

Kroenig

Clubhouse

Lou Russo

A Million Ways to Die in the West

Doc Brown

Back to the Future Part III

Doctor Emmett Brown

The Real History of Science Fiction

Himself

Who Framed Roger Rabbit

Judge Doom

Back to the Future

Emmett Brown

Best of the West

The Calico Kid

The Michael J. Fox Show

Principal McTavish

The Word

Hans Bogardus

Deadly Games

Sebastian Jackal

Stacked

Harold March

The Addams Family

Uncle Fester

Clue

Professor Plum

Piranha 3D

Mr. Goodman

Addams Family Values

Uncle Fester

Dennis the Menace

Switchblade Sam

Man on the Moon

Self (uncredited)

Guns & Moses

Sol Fassbinder

The Tale of Despereaux

Hovis (voice)

Going in Style

Milton Kupchak

Piranha 3DD

Mr. Goodman

Mr. Mom

Larry

Meteor

Prof. Daniel Lehman

Knights of Bloodsteel

Tesselink

The Adventures of Buckaroo Banzai Across the 8th Dimension

John Bigboote

Alice in Wonderland

White Knight

The Tender Bar

Grandpa Maguire

The Pagemaster

Mr. Dewey

Angels in the Outfield

Al the Angel

Things to Do in Denver When You're Dead

Pieces

Star Trek III: The Search for Spock

Cmdr. Kruge

Wit

Dr. Harvey Kelekian

The Postman Always Rings Twice

The Salesman

DuckTales: The Movie - Treasure of the Lost Lamp

Merlock (voice)

Eight Men Out

Bill Burns

The Earth Day Special

Dr. Emmett L. Brown

The Dream Team

Henry Sikorsky

Interstate 60

Ray

I Dream

Professor Toone

The Onion Field

Jailhouse Lawyer

Foodfight!

Mr. Clipboard (voice)

Convergence

Morley Allen

Goin' South

Towfield

Baby Geniuses

Heep

Back in Time

Self

InSight

Shep

Boundaries

Stanley

Semi-Tough

Camp Nowhere

Dennis Van Welker

It Came from the Sky

Jarvis Moody

Hey Arnold! The Movie

Coroner (voice)

Jack and the Beanstalk

Headmaster

Fly Me to the Moon

Amos (voice)

50 Years of Star Trek

Self

My Favorite Martian

Uncle Martin

Cold Moon

James Redfield

Why Me?

Bruno Daley

Walk Like a Man

Reggie Shand / Henry Shand

Muse

Rauschen

Joy of Sex

Coach Hindenberg

National Lampoon's Movie Madness

Samuel Starkman ("Municipalians")

The Big Time

Doc Powers

Tankhouse

Buford

Santa Buddies

Stan Cruge

The Real Blonde

Ernst

Last Call

Pete

The Witches of Oz

The Wizard of Oz

The Right to Remain Silent

Johnny Benjamin

Love, Wedding, Marriage

Dr. George

Who Done It: The Clue Documentary

Self (archive footage)

Senior Moment

Sal Spinelli

Must See TV: An All Star Tribute to James Burrows

Self

Butch and Sundance: The Early Days

Bill Carver

Flakes

Willie

I Am Not a Serial Killer

Mr. Crowley

Tales from the Future

Self

Amazing Stories

R. Beanes

Call of the Wild

'Grandpa' Bill Hale

Queen Bees

Arthur Lane

Quicksilver Highway

Aaron Quicksilver

Untitled Lani Pixels Project

Grandpa (voice)

Zodiac

Harry Setag

The Making of 'The Pagemaster'

Mr. Dewey - Host

To Be or Not to Be

Capt. Schultz

Self Reliance

Dennis Walcott

Man and Witch: The Dance of a Thousand Steps

The Alchemist

On the Edge

Attorney Bum (segment "Happy Birthday")

Dead Ahead: The Exxon Valdez Disaster

Frank Iarossi

Arthur Hailey's Detective

Anderson in Launderette

Miracles

Harry

Blood Lake: Attack of the Killer Lampreys

Mayor Akerman

The Lady in Red

Frognose

Twenty Bucks

Jimmy

Admissions

Steward Worthy

Expedition: Back To The Future

Self

A Perfect Day

Michael

Dinner at Fred's

Dad

Money on the Side

Sergeant Stampone

A Very Sunny Christmas

Santa Claus John #2 (uncredited)

Donald Trump's The Art of the Deal: The Movie

Doc Brown

The Sound

Clinton Jones

T Bone N Weasel

Weasel

Mr. Payback: An Interactive Movie

Ed Jarvis

Angels in the Endzone

Al

The Ransom of Red Chief

Sam Howard

Radioland Murders

Zoltan

Changing Habits

Theo Teagarden

Dead Before Dawn

Horus Galloway

Here Comes Peter Cottontail: The Movie

Seymour S. Sassafras (voice)

Magic

Magic (voice)

Bad Girls from Valley High

Mr. Chauncey

The Legend of the Lone Ranger

Maj. Bartholomew 'Butch' Cavendish

Dorothy and the Witches of Oz

The Wizard Of Oz

Looking Back to the Future

Self

Nandor Fodor and the Talking Mongoose

Dr. Harry Price

Suburban Commando

Charlie Wilcox

That Guy... Who Was In That Thing 3: Trek Stars

Self

Just in Time for Christmas

Grandpa Bob

Lacy and the Mississippi Queen

Jennings

Camp Hideout

Falco

The Black Marble

Arnold's Collector

Wish You Were Dead

Bruce

Another Man, Another Chance

Jesse James (uncredited)

Valerie on the Stairs

Everett Neely

Next Stop, Christmas

Ticket Agent/Conductor

Haunted Lighthouse 4-D

Cap'n Jack

Anything but Christmas

Harry

Three Warriors

Steve Chaffey

Back To the Present: The Special

88

Cyrus

Rent-a-Kid

Lawrence 'Larry' Kayvey

Spirit Halloween: The Movie

Alex Windsor

The Secrets of the 'Back to the Future' Trilogy

Dr. Emmett Brown (archive footage)

Roger Rabbit and the Secrets of Toon Town

Self

The Macabre World of Lavender Williams

Lester (voice)

The One I Wrote for You

Pop

Making a Killing

Lloyd Mickey

The Animated Adventures of Tom Sawyer

Judge Thatcher (voice)

Camelot: Live from Lincoln Center

King Pellinore

The Narrative of Victor Karloch

Victor Karloch

Doc Brown Saves the World

Emmett Brown

Pirate's Code: The Adventures of Mickey Matson

Grandpa Jack

Snowmen

The Caretaker

Schizoid

Gilbert

The Oogieloves in the Big Balloon Adventure

Lero Sombrero

Track 29

Henry Henry

Cadillac Ranch

Wood Grimes

In Search of Dr. Seuss

Mr. Hunch

The Cowboy and the Ballerina

Woody

Pilgrim, Farewell

Paul

Making of One Flew Over the Cuckoo's Nest

Self

The Chateau Meroux

Nathan

Cadaver

Cadaver

Chasing Destiny

Jet James

Legend of the White Horse

Jim Martin

September Gun

Jack Brian

Excuse Me for Living

Lars

The Adventures of Mickey Matson and the Copperhead Conspiracy

Grandpa Jack

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

Self

The Emperor's Treasure

Lord Imaru (voice)

When Good Ghouls Go Bad

Uncle Fred Walker

Dr. Jack & Mr. Nicholson

Self

Completely Cuckoo

Self

Say It Ain't Solo

Self

The Boat Builder

Abner

The Haunted Swordsman

The Black Monk

Kids World

Leo

The Fantastic Seven

Skip Hartman

Sid the Science Kid: The Movie

Dr. Bonabodon (voice)

ReRUN

George Benson (old)

Keith Lemon's Back t'Future Tribute

Self

Looking Back at the Future

Himself

Adventures of Serial Buddies

Dr. Von Gearheart

Space Case

Narrator (voice)

Street Hawk: The Movie

Anthony Corrido

The Movers

One by One

Harvey

Car Crash: The Delorean Story

Himself

King Lear

King Lear

Merry Christmas Space Case

Narrator (voice)

The Cyberchase Movie

The Hacker (voice)