Roberto Leoni scripted more than seventy films (some of which have become real cult movies such as
Santa Sangre (1989) by Alejandro Jodorowsky signed on Empire list of the 500 greatest movies of all time or as
My Dear Killer (1972) by Tonino Valerii quoted even by Quentin Tarantino), with stars such as Kirk Douglas, Roger Moore, Woody Strode, Martin Balsam, Vittorio Gassman, Tomas Milian, Mario Adorf, Giancarlo Giannini. He has written and directed TV and feature films (including
Favola crudele (1991) with John Savage) and also short films Pro Bono against drugs, femicides (with the auspices of Amnesty International), discrimination and persecutions... From August 2017 he reviews new and classic movies in his talk show
Roberto Leoni Movie Reviews (2017). His last feature film just completed is
De Serpentis Munere (2021) (The Serpent's Gift) starring
Guglielmo Scilla Willwoosh (2008) Alexandra Dinu Benjamin Stender Valentina Reggio.