Luna (1979)

While touring in Italy, a recently-widowed American opera singer has an incestuous relationship with her 15-year-old son to help him overcome his heroin addiction.

Director: Bernardo Bertolucci

Cast: Jill Clayburgh, Matthew Barry, Veronica Lazar, Renato Salvatori, Fred Gwynne, Alida Valli, Elisabetta Campeti, Franco Citti, Roberto Benigni, Carlo Verdone, Peter Eyre, Mustapha Barat, Pippo Campanini, Rodolfo Lodi, Sara Di Nepi, Jole Silvani, Francesco Mei, Ronaldo Bonacchi