Guess Whos Coming To Dinner (1967)

Controversial in its time. A young white woman brings her black fiance home to meet her parents. The situation truly tests their open-mindedness and understanding. Hepburn and Tracy (in his last film appearance) are wonderful and serve as the anchors in what would otherwise have been a rather sugary film. Houghton, who portrays the independent daughter, is the real-life niece of Hepburn.