Scenarist
- Ben Hur (2010)
- Dean Spanley (2008)
- While I Was Gone (2004)
- Reversible Errors (2004)
- Lathe of Heaven (2002)
- Mission of the Shark: The Saga of the U.S.S. Indianapolis (1991)
- Damnation Alley (1977)
- Night Moves (1975)
- Ulzana's Raid (1972)
- The Last Run (1971)
- The Hired Hand (1971)
Filmografie - altele
