 Buck at the Edge of Heaven1991 · Screenplay | Screenplay |
 Last Flight To Hell1990 · Screenplay | Screenplay |
 Alien from the Deep1989 · Writer | Writer |
 Leathernecks1989 · Writer | Writer |
 Sinbad of the Seven Seas1989 · Screenplay | Screenplay |
 Last Platoon1988 · Writer | Writer |
 The Commander1988 · Writer | Writer |
 Night of the Sharks1988 · Writer | Writer |
 Striker1988 · Writer | Writer |
 Days of Hell1986 · Writer | Writer |
 Light Blast1985 · Writer | Writer |
 Code Name: Wild Geese1984 · Writer | Writer |
 Tuareg: Desert Warrior1984 · Writer | Writer |
 Raiders of Atlantis1983 · Screenplay | Screenplay |
 Rush1983 · Writer | Writer |
 Escape from the Bronx1983 · Screenplay | Screenplay |
 The New Barbarians1983 · Writer | Writer |
 Thor the Conqueror1983 · Screenplay | Screenplay |
 The Last Blood1983 · Writer | Writer |
 Young, Beautiful... Probably Rich1982 · Writer | Writer |
 Tiger Joe1982 · Screenplay | Screenplay |
 The Hunters of the Golden Cobra1982 · Screenplay | Screenplay |
| HHistory of the Erotic Cinema1982 · Writer | Writer |
 Day of the Cobra1980 · Screenplay | Screenplay |
 The Shark Hunter1979 · Screenplay | Screenplay |
 Pleasure Shop on 7th Ave.1979 · Writer | Writer |
 Last Feelings1978 · Screenplay | Screenplay |
 Ladies' Doctor1977 · Screenplay | Screenplay |
 Tentacles1977 · Writer | Writer |
 Last Cannibal World1977 · Screenplay | Screenplay |
 Carioca Tigre1976 · Writer | Writer |
 The Loves and Times of Scaramouche1976 · Screenplay | Screenplay |
 The School Teacher1975 · Writer | Writer |
 The Black Peacock1975 · Writer | Writer |
 Poker in Bed1974 · Writer | Writer |
 The Crazy Bunch1974 · Screenplay | Screenplay |
 The Three Musketeers of the West1973 · Writer | Writer |
 High Crime1973 · Screenplay | Screenplay |
 Once Upon a Time in the West There Was a Man Called Invincible1973 · Screenplay | Screenplay |
 Holy God, Here Comes the Passatore!1973 · Screenplay | Screenplay |
 Father Jackleg1972 · Screenplay | Screenplay |
 Ubalda, All Naked and Warm1972 · Writer | Writer |
 The Return of Halleluja1972 · Screenplay | Screenplay |
 Seven Murders for Scotland Yard1972 · Screenplay | Screenplay |
 His Name Was Holy Ghost1972 · Screenplay | Screenplay |
 The Devil with Seven Faces1971 · Writer | Writer |
 The Two Big Shots1971 · Screenplay | Screenplay |
 The Two of the F. 1 at the Craziest, Craziest Race in the World1971 · Screenplay | Screenplay |
