The Return of Captain Kidd (2011) (pre-production) .... Gramps
Thicker (2010) (pre-production) .... Augustine
InSight (2011) (post-production) .... Shep
The Chateau Meroux (2010) (post-production) .... Nathan
Serial Buddies (2010) (post-production) .... Dr. Von Gearhart
The Witches of Oz 3D (2010) (post-production) .... The Wizard of Oz
Last Call (2010/I) (post-production) .... Pete
Piranha 3D (2010) .... Mr. Goodman
"Chuck" .... Dr. Leo Dreyfus (1 episode, 2010)
- Chuck vs the Tooth (2010) TV episode .... Dr. Leo Dreyfus
Snowmen (2010) .... The Caretaker
Jack and the Beanstalk (2010) (V) .... Headmaster
Wolf Sheep (2010)
Santa Buddies (2009) (V) .... Stan Cruge
It's Always Sunny in Philadelphia: A Very Sunny Christmas (2009) (V) (uncredited) .... Santa Claus John #2
The Macabre World of Lavender Williams (2009) (voice) .... Lester
Call of the Wild (2009) .... 'Grandpa' Bill Hale
"Knights of Bloodsteel" .... Tesselink (2 episodes, 2009)
- Episode #1.1 (2009) TV episode .... Tesselink
- Episode #1.2 (2009) TV episode .... Tesselink
"Meteor" .... Prof. Daniel Lehman (2 episodes, 2009)
- Episode #1.2 (2009) TV episode (credit only) .... Prof. Daniel Lehman
- Episode #1.1 (2009) TV episode .... Prof. Daniel Lehman
Foodfight! (2009) (voice) .... Mr. Clipboard
The Tale of Despereaux (2008) (voice) .... Hovis
"Cyberchase" .... The Hacker (32 episodes, 2002-2008)
"Law & Order: Criminal Intent" .... Carmine (1 episode, 2008)
- Vanishing Act (2008) TV episode .... Carmine
The Simpsons Ride (2008) (voice) .... Dr. Emmett L. Brown
"Live from Lincoln Center" .... King Pellinore (1 episode, 2008)
- Camelot (2008) TV episode .... King Pellinore
CR: Back to the Future (2008) (VG) .... Dr. Emmett Brown
Fly Me to the Moon 3D (2008) (voice) .... Amos
"Numb3rs" .... Ross Moore (1 episode, 2007)
- Graphic (2007) TV episode .... Ross Moore
Flakes (2007) .... Willie
A Perfect Day (2006) (TV) .... Michael
"Stacked" .... Harold March (20 episodes, 2005-2006)
"Masters of Horror" .... Everett Neely (1 episode, 2006)
- Valerie on the Stairs (2006) TV episode .... Everett Neely
Enfants terribles (2005) .... Reverend Burr
Here Comes Peter Cottontail: The Movie (2005) (V) (voice) .... Seymour S. Sassafras
"Clubhouse" .... Lou Russo (11 episodes, 2004-2005)
Detective (2005) (TV) .... Anderson in Launderette
"King of the Hill" .... Smitty (1 episode, 2005)
- Care-Takin' Care of Business (2005) TV episode (voice) .... Smitty
"The West Wing" .... Lawrence Lessig (1 episode, 2005)
- The Wake Up Call (2005) TV episode .... Lawrence Lessig
Bad Girls from Valley High (2005) .... Mr. Chauncey
"I Dream" .... Professor Toone (4 episodes, 2004)
Admissions (2004) .... Stewart Worthy
Back to the Future Video Slots (2004) (VG) (also archive footage) .... Dr. Emmett Brown
"The Grim Adventures of Billy & Mandy" .... Snail (1 episode, 2004)
- Dumb Luck/Nobody Loves Grim (2004) TV episode (voice) .... Snail
Merry Christmas Space Case (2003) (voice) .... Narrator
"Tremors" .... Dr. Cletus Poffenberger (3 episodes, 2003)
- Project 4-12 (2003) TV episode .... Dr. Cletus Poffenberger
- Flora or Fauna (2003) TV episode .... Dr. Cletus Poffenberger
- Ghost Dance (2003) TV episode .... Dr. Cletus Poffenberger
"Ed" .... Burt Kiffle (1 episode, 2003)
- The Movie (2003) TV episode .... Burt Kiffle
Haunted Lighthouse (2003) .... Cap'n Jack
"Malcolm in the Middle" .... Walter (1 episode, 2002)
- Family Reunion (2002) TV episode .... Walter
The Big Time (2002) (TV) .... Doc Powers
Hey Arnold! The Movie (2002) (voice) .... Coroner
Wish You Were Dead (2002) .... Bruce
Interstate 60: Episodes of the Road (2002) .... Ray
Kids World (2001) .... Leo
"The Tick" .... Mr. Fishladder (1 episode, 2001)
- Pilot (2001) TV episode (uncredited) .... Mr. Fishladder
When Good Ghouls Go Bad (2001) (TV) .... Uncle Fred Walker
Happy Birthday (2001/I) .... Attorney Bum
On the Edge (2001) (TV) .... Attorney Bum (segment "Happy Birthday")
Chasing Destiny (2001) (TV) .... Jet James
Wit (2001) (TV) .... Dr. Harvey Kelekian
Space Case (2001) (voice) .... Narrator
Convergence (1999) .... Morley Allen
It Came from the Sky (1999) (TV) .... Jarvis Moody
Baby Geniuses (1999) .... Heep
Alice in Wonderland (1999) (TV) .... White Knight
"Spin City" .... Owen Kingston (1 episode, 1999)
- Back to the Future IV - Judgment Day (1999) TV episode .... Owen Kingston
My Favorite Martian (1999) .... Uncle Martin
Dinner at Fred's (1999) .... Dad
The Ransom of Red Chief (1998) (TV) .... Sam Howard
The Animated Adventures of Tom Sawyer (1998) (V) (voice) .... Judge Thatcher
Anastasia (1997) (voice) .... Rasputin
Angels in the Endzone (1997) (TV) .... Al, the boss angel
The Real Blonde (1997) .... Ernst
"Deadly Games" .... Jordan Kenneth Lloyd / ... (13 episodes, 1995-1997)
Changing Habits (1997) .... Theo Teagarden
Quicksilver Highway (1997) (TV) .... Aaron Quicksilver
Cadillac Ranch (1996) .... Wood Grimes
The Right to Remain Silent (1996) (TV) .... Johnny Benjamin
Toonstruck (1996) (VG) .... Drew Blanc
Rent-a-Kid (1995) (TV) .... Lawrence 'Larry' Kayvey
"Fallen Angels" .... The Continental Op (1 episode, 1995)
- Fly Paper (1995) TV episode .... The Continental Op
Things to Do in Denver When You're Dead (1995) .... Pieces
Mr. Payback: An Interactive Movie (1995) .... Ed Jarvis
The Pagemaster (1994) .... Mr. Dewey/The Pagemaster
In Search of Dr. Seuss (1994) (TV) .... Mr. Hunch
Radioland Murders (1994) .... Zoltan
Camp Nowhere (1994) .... Dennis Van Welker
Angels in the Outfield (1994) .... Al the Boss Angel
"Mrs. Piggle-Wiggle" (1994) TV series .... Mr. Moohead (unknown episodes)
Rescue the Scientists (1994) (VG) .... Lieutenant Jack Tempus
Addams Family Values (1993) .... Uncle Fester Addams
Dennis the Menace (1993) .... Switchblade Sam (Town Robber)
Twenty Bucks (1993) .... Jimmy
Dead Ahead: The Exxon Valdez Disaster (1992) (TV) .... Frank Iarossi
T Bone N Weasel (1992) (TV) .... William 'Weasel' Weasler
"Avonlea" .... Alistair Dimple (1 episode, 1992)
- Another Point of View (1992) TV episode .... Alistair Dimple
The Addams Family (1991) .... Uncle Fester / Gordon Craven
"Back to the Future" .... Dr. Emmett Brown (1 episode, 1991)
- Brothers (1991) TV episode .... Dr. Emmett Brown
Suburban Commando (1991) .... Charlie Wilcox
Back to the Future... The Ride (1991) (uncredited) .... Dr. Emmett Brown
DuckTales: The Movie - Treasure of the Lost Lamp (1990) (voice) .... Merlock
Back to the Future Part III (1990) .... Dr. Emmett Brown
Why Me? (1990) .... Bruno Daley
Back to the Future Part II (1989) .... Dr. Emmett Brown
The Dream Team (1989) .... Henry Sikorsky
Eight Men Out (1988) .... 'Sleepy' Bill Burns
Who Framed Roger Rabbit (1988) .... Judge Doom
Track 29 (1988) .... Henry Henry
"The Dictator" .... Joseph Paul Domino (1 episode)
- Episode #1.1 (????) TV episode .... Joseph Paul Domino
Bialy smok (1987) .... Jim Martin
Walk Like a Man (1987) .... Reggie Shand/Henry Shand
Tales from the Hollywood Hills: Pat Hobby Teamed with Genius (1987) (TV) .... Pat Hobby
"Amazing Stories" .... Professor B.O. Beanes (1 episode, 1986)
- Go to the Head of the Class (1986) TV episode .... Professor B.O. Beanes
Miracles (1986) .... Harry
Clue (1985) .... Professor Plum
Back to the Future (1985) .... Dr. Emmett Brown
"Street Hawk" .... Anthony Corrido (1 episode, 1985)
- Pilot (1985) TV episode .... Anthony Corrido
The Cowboy and the Ballerina (1984) (TV) .... Woody
The Adventures of Buckaroo Banzai Across the 8th Dimension (1984) .... John Bigboote
Joy of Sex (1984) .... Coach Hindenberg
Old Friends (1984) (TV) .... Jerry Forbes
Star Trek III: The Search for Spock (1984) .... Cmdr. Kruge
"Cheers" .... Phillip Semenko (2 episodes, 1984)
- I'll Be Seeing You: Part 2 (1984) TV episode .... Phillip Semenko
- I'll Be Seeing You: Part 1 (1984) TV episode .... Phillip Semenko
To Be or Not to Be (1983) .... Capt. Schultz
September Gun (1983) (TV) .... Jack Brian
Mr. Mom (1983) .... Larry
"Taxi" .... Reverend Jim Ignatowski (84 episodes, 1978-1983)
Money on the Side (1982) (TV) .... Sergeant Stampone
National Lampoon's Movie Madness (1982) .... Samuel Starkman ("Municipalians")
Pilgrim, Farewell (1982) (TV) .... Paul
"Best of the West" .... The Calico Kid (3 episodes, 1981-1982)
- The Calico Kid Goes to School (1982) TV episode .... The Calico Kid
- The Calico Kid Returns (1981) TV episode .... The Calico Kid
- Pilot (1981) TV episode .... The Calico Kid
The Legend of the Lone Ranger (1981) .... Maj. Bartholomew 'Butch' Cavendish
The Postman Always Rings Twice (1981) .... The Salesman
Schizoid (1980) .... Gilbert
"Semi-Tough" .... Frank Mullens (1 episode, 1980)
- The First Hurrah (1980) TV episode .... Frank Mullens
The Black Marble (1980) .... Arnold's collector
Visions" (1 episode, 1980)
- It's the Willingness (1980) TV episode
The Onion Field (1979) .... Jailhouse lawyer
The Lady in Red (1979) .... Frognose
Butch and Sundance: The Early Days (1979) (as Chris Lloyd) .... Bill Tod Carver
The Fantastic Seven (1979) (TV) .... Skip Hartman
"Barney Miller" .... Arnold Scully / ... (2 episodes, 1978-1979)
- Open House (1979) TV episode .... Vincent Carew
- The Vandal (1978) TV episode .... Arnold Scully
"The Word" (1978) TV mini-series .... Hans Bogardus
Goin' South (1978) .... Deputy Towfield
Lacy and the Mississippi Queen (1978) (TV) .... Jennings
Three Warriors (1977) .... Steve Chaffey
Another Man, Another Chance (1977) (uncredited) .... Jesse James
"The Adams Chronicles" (1976) TV mini-series .... Tsar Alexandre I (unknown episodes)
One Flew Over the Cuckoo's Nest (1975) .... Taber
