The scene on the stairs after Peggy speaks with her Grandma on the phone
Both Kathleen Turner and Barbara Harris are so incredible in the whole film but this scene in particular is so beautiful. Peggy is devastated after speaking to her beloved grandma, who has been dead for years, and her mother is only concerned about sex. Both these women deserved Oscars just for this scene alone. I love this film except for Nicholas Cage who was terrible as Charlie. But, he is Francis Ford Coppola's nephew! The music - it truly is John Barry's best score.
Just thinking out loud...