2024
The D-Con Chamber as Self2024
Space Command Redemption as Greg Mazzey2023
Babylon 5: The Road Home as Lennier (voice)2021
Toon In with Me as Self2018
Lost in Space as Real Dr. Smith2018
Lost in Space as Dr. Zachary Smith2016
The Loud House as Timothy Mccole2012
Bravest Warriors as Ralph Waldo Pickle Chips2010
Ben 10: Ultimate Alien as Agent Bryson (voice)2009
The Face is Familiar as Narrator2007
Holly Hobbie and Friends: Surprise Party as Bud Morris (voice)2006
Holly Hobbie and Friends: Christmas Wishes as Bud Morris / Judge #1 (voice)2006
Look, Up in the Sky! The Amazing Story of Superman as Self2006
Holly Hobbie & Friends as Bud Morris (voice)2006
A.I. Assault as Major Keith2005
Derailroaded as Self2005
Ringers: Lord of the Fans as Self2004
Comic Book: The Movie as Bill Mumy2002
The Twilight Zone as Anthony Fremont2002
What's New, Scooby-Doo? as Harry Noze (voice)2002
Larry 'Wild Man' Fischer as Self2001
Crossing Jordan as Paper Shredder Operator2001
TVography as Not available2000
Buzz Lightyear of Star Command as Eon (voice)2000
Behind the Dementia as himself2000
Boom! Hollywood's Greatest Disaster Movies as Self - Host1999
Attack of the 50 Foot Monster Mania as Narrator1998
Lost In Space Forever as Self (also archive footage)1997
The Weird Al Show as Not available1996
Space Cases as Not available1996
Underground Adventure as Sam (voice)1996
The Monkey Prince as Sam (voice)1995
Three Wishes as Neighbor1994
Babylon 5 as Lennier1994
Space Ghost Coast to Coast as Not available1994
The Steven Banks Show as Billy Mumy1993
Star Trek: Deep Space Nine as Kellin1993
Diagnosis: Murder as Parker Craddick1992
Batman: The Animated Series as The Fox (voice)1992
Double Trouble as Bob1991
The Ren & Stimpy Show as Not available1990
The Flash as Roger Braintree1990
Captain America as Young General Fleming1988
Superboy as Not available1987
Zabagabee as Art Barnes1986
Matlock as Not available1984
Hard to Hold as The James Roberts Band - Keyboard1983
Twilight Zone: The Movie as Tim1980
Fish Heads as Not available1977
Sunshine Christmas as Weaver1975
Sunshine as Weaver1974
The Rockford Files as Trask1974
The Rockford Files: Backlash of the Hunter as Nick Butler1973
Papillon as Lariot1973
Sunshine as Weaver1971
Bless the Beasts & Children as Lawrence Teft1969
Rascal as Sterling North1968
Lancer as Not available1968
Wild in the Streets as Boy (uncredited)1965
I Dream of Jeannie as Custer1965
Lost in Space as Will Robinson1965
Dear Brigitte as Erasmus 'Ras' Leaf1965
Lost in Space - No Place to Hide as Will Robinson1964
Bewitched as Michael1964
The Munsters as Not available1964
For the Love of Willadean as Freddy Gray1963
The Fugitive as David Taft1963
The Greatest Show on Earth as Jeff1963
Vacation Playhouse as Chris Williams1963
A Child Is Waiting as Child1963
A Ticklish Affair as Alex Martin1963
Palm Springs Weekend as Boom Boom Yates1962
The Virginian as Willy1962
The Alfred Hitchcock Hour as Tony Mitchell1962
The Eleventh Hour as Not available1962
Going My Way as Not available1962
Sammy, the Way-Out Seal as Petey Loomis1961
Dr. Kildare as Jeffey1961
Ben Casey as Not available1961
Kraft Mystery Theatre as Not available1961
The Wizard of Baghdad as Aladdin1961
Tammy Tell Me True as Neil Bateman1960
National Velvet as Not available1959
The Twilight Zone as Billy Bayles1959
The Twilight Zone as Anthony Fremont1959
The Twilight Zone as Young Pip1957
Perry Mason as Miles1957
Have Gun, Will Travel as Little Boy at Carlton Hotel1957
Wagon Train as Toddy1955
Alfred Hitchcock Presents as Jackie Chester1955
Alfred Hitchcock Presents as Mickey Hollins1954
The Wonderful World of Disney as Petey Loomis1954
The Wonderful World of Disney as Freddy Gray1953
Letter to Loretta as Rennie1953
Letter to Loretta as Jimmy Harrison1953
General Electric Theater as Buzz1950
The Jack Benny Program as Little Boy Who Weighs Himself1999
Roswell Conspiracies: Aliens, Myths and Legends Writer1998
Lost In Space Forever Writer1996
Space Cases Creator1980
Fish Heads Musician