Actor
Messiah of Evil
1974
as Zombie in Car (uncredited)
Documentaries
Remembering Messiah of Evil
2009
as himself
Teen Spirit: Teenagers and Hollywood
2009
as Himself
Boffo! Tinseltown's Bombs and Blockbusters
2006
as Self
A Legacy of Filmmakers: The Early Years of American Zoetrope
2004
as Self
Artifact from the Future: The Making of 'THX 1138'
2004
as Self
Easy Riders, Raging Bulls: How the Sex, Drugs and Rock 'n' Roll Generation Saved Hollywood
2003
as Self
The Making of 'American Graffiti'
1998
as Self
Directing
Howard the Duck
1986
Director
Best Defense
1984
Director
French Postcards
1979
Director
Messiah of Evil
1974
Director
Down These Mean Streets
1966
Director
Production
Mothers, Daughters and Lovers
1989
Executive Producer
A Father's Homecoming
1988
Executive Producer
Messiah of Evil
1974
Producer
Writing
Radioland Murders
1994
Screenplay
Mothers, Daughters and Lovers
1989
Teleplay
A Father's Homecoming
1988
Writer
Howard the Duck
1986
Screenplay
Best Defense
1984
Screenplay
Indiana Jones and the Temple of Doom
1984
Screenplay
French Postcards
1979
Writer
More American Graffiti
1979
Characters
Lucky Lady
1975
Writer
Messiah of Evil
1974
Screenplay
American Graffiti
1973
Writer
The Devil's Eight
1969
Screenplay
Down These Mean Streets
1966
Writer
Crew
Star Wars
1977
Script