That was over 55 years ago in 1967.
Today he is 95, and has starred in 58 movies in total, 33 since Guess Who's Coming to Dinner was released.
In Guess Who's Coming to Dinner, I think Sidney Poitier looks:
Guess Who's Coming to Dinner scores 7.7 out of 10 on The Movie Database.
Sidney Poitier's first acting role was as 'Dr. Luther Brooks' in No Way Out, released in 1950 when he was 23.