Guess Who's Coming to Dinner (1967) Stars Sidney Poitier, Katharine Houghton, Katharine Hepburn, Spencer Tracy, etc.
I've been wanting to watch this one for years. Ever since I fell in love with Lilies of the Field. It was as good as I expected. It was quite good, very good. An emotional love story with a lot of heart. Definitely recommended.
Do not watch unless you want to know how it ends...