Beppe Grillo
In 1989, with Umberto Angelucci, Benni directed the film "Musica per vecchi animali", adapted from his book "Comici spaventati guerrieri", with the actors Dario Fo, Paolo Rossi, and Viola Simoncioni. Two years before that he was also the screenwriter of another film, "Topo Galileo" by Francesco Laudadio, starring his friend Beppe Grillo and with music by Fabrizio De André and Mauro Pagani.