Sidney Poitier, Katharine Houghton, Katharine Hepburn and Spencer Tracy in Guess Who's Coming to Dinner. A sensation when it was released in December 1967, it was one of the three top-grossing films of 1968, all starring Sidney Poitier. (PhotoFest) Return to Previous Page Back to: Sidney Poitier Profile Sidney Poitier Biography Sidney Poitier Interview Sidney Poitier Photo Gallery