Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Producer | Alien | 1979 | |
| Producer | Prometheus | 2012 | |
| Producer | Alien: Covenant | 2017 | |
| Producer | Alien vs. Predator | 2004 | |
| Writer | Alien³ | 1992 | |
| Producer | Alien³ | 1992 | |
| Producer | Alien - La clonazione | 1997 | |
| Producer | Aliens vs. Predator 2 | 2007 | |
| Writer | Undisputed | 2002 | |
| Writer | Casa, dolce casa? | 1986 | |
| Producer | Casa, dolce casa? | 1986 | |
| Producer | Il cavaliere del male | 1995 | |
| Producer | Il piacere del sangue | 1996 | |
| Writer | Perché un assassinio | 1974 | |
| Writer | I guerrieri della palude silenziosa | 1981 | |
| Producer | I guerrieri della palude silenziosa | 1981 | |
| Writer | Non rubare... se non è strettamente necessario | 1977 | |
| Producer | Tales from the Crypt: Ritual | 2002 | |
| Producer | Roadracers | 1994 | |
| Director | The Black Bird | 1975 | |
| Writer | Il caso Myra Breckinridge | 1970 |