Drehbuchautor bei
| 2024 | Caligula: The Ultimate Cut | ||
| 1990 | Palermo vergessen | ||
| 1987 | Der Sizilianer | ||
| 1979 | Caligula | ||
| 1970 | Myra Breckinridge | ||
| 1970 | Last of the Mobile Hot Shots | ||
| 1966 | Brennt Paris? | ||
| 1964 | Der Kandidat | ||
| 1960 | Besuch auf einem kleinen Planeten | ||
| 1959 | Ben Hur | ||
| 1959 | Plötzlich im letzten Sommer | ||
| 1959 | The Scapegoat | ||
| 1958 | Billy the Kid -Einer muss dran glauben | ||
| 1958 | I Accuse! | ||
| 1956 | The Catered Affair |
mitgespielt in
| 2022 | The Last Movie Stars | ||
| 2015 | Best of Enemies | ||
| 2013 | Salinger | ||
| 2012 | Norman Mailer: The American | ||
| 2011 | Wilde Salome | ||
| 2009 | Shrink - Nur nicht die Nerven verlieren | ||
| 2009 | Hugh Hefner: Playboy, Activist and Rebel | ||
| 2008 | Zero An Investigation Into 9-11 | ||
| 2006 | Die Akte USA gegen John Lennon | ||
| 2005 | Inside Deep Throat | ||
| 2005 | Why We Fight | ||
| 2003 | Sex at 24 Frames Per Second | ||
| 2002 | The Cockettes | ||
| 2002 | Igby! | ||
| 1997 | Thomas Jefferson | ||
| 1997 | Die Verschwörung im Schatten | ||
| 1997 | Gattaca | ||
| 1995 | Gefangen in der Traumfabrik | ||
| 1994 | With Honors | ||
| 1992 | Bob Roberts | ||
| 1972 | Fellinis Roma | ||
| 1959 | Plötzlich im letzten Sommer | ||
| 1946 | Ritual in Transfigured Time | ||
| Ben-Hur: The Making of an Epic |