Casablanca (film)
From Tardis Wiki, the free Doctor Who reference
Casablanca was a famous film. (PROSE: Dancing the Code) Ingrid Bergman was among its cast. (PROSE: Just War) Makenzie Shaw quoted this film in reference to him and Martha and Amber Mailloux. "The problems of three people didn't amount to a hill of beans in this world." (PROSE: Deceit)