"Yes, there are serious faults in Stanley Kramer's "Guess Who's Coming to Dinner," but they are overcome by the virtues of this delightfully old-fashioned film. It would be easy to tear the plot to shreds and catch Kramer in the act of copping out. But why? On its own terms, this film is a joy to see, an evening of superb entertainment."
Good call by Ebert. Poitier is really one of the greats.