 | Space Command Redemption (2024)
Greg Mazzey |
 | Babylon 5: The Road Home (2023)
Lennier (voice) |
 | What We Left Behind: Looking Back at Star Trek: Deep Space Nine (2018)
Self |
 | The Face is Familiar (2009)
Narrator |
 | Holly Hobbie and Friends: Surprise Party (2007)
Bud Morris (voice) |
 | Holly Hobbie and Friends: Christmas Wishes (2006)
Bud Morris / Judge #1 (voice) |
 | A.I. Assault (2006)
Major Keith |
 | Look, Up in the Sky! The Amazing Story of Superman (2006)
Self |
 | Derailroaded (2005)
Self |
 | Ringers: Lord of the Fans (2005)
Self |
 | Comic Book: The Movie (2004)
Bill Mumy |
| | Larry 'Wild Man' Fischer (2002)
Self |
 | Behind The Dementia (2000)
himself |
 | Attack of the 50 Foot Monster Mania (1999)
Narrator |
 | Lost In Space Forever (1998)
Self (also archive footage) |
 | The Monkey Prince (1996)
Sam (voice) |
 | Underground Adventure (1996)
Sam (voice) |
 | Three Wishes (1995)
Neighbor |
 | Double Trouble (1992)
Bob |
 | Captain America (1990)
Young General Fleming |
| | Zabagabee (1987)
Art Barnes |
 | Hard to Hold (1984)
The James Roberts Band - Keyboard |
 | Twilight Zone: The Movie (1983)
Tim |
 | Sunshine Christmas (1977)
Weaver |
 | The Rockford Files (1974)
Nick Butler |
 | Papillon (1973)
Lariot |
 | Sunshine (1973)
Weaver |
 | Bless the Beasts & Children (1971)
Lawrence Teft |
 | Rascal (1969)
Sterling North |
 | Wild in the Streets (1968)
Boy |
 | Dear Brigitte (1965)
Erasmus 'Ras' Leaf |
 | Lost in Space - No Place to Hide (1965)
Will Robinson |
 | For the Love of Willadean (1964)
Freddy Gray |
 | Palm Springs Weekend (1963)
Boom Boom Yates |
 | A Ticklish Affair (1963)
Alex Martin |
 | A Child Is Waiting (1963)
Child |
 | Sammy, the Way-Out Seal (1962)
Petey Loomis |
 | Tammy Tell Me True (1961)
Neil Bateman |
 | The Wizard of Baghdad (1961)
Aladdin |
