95%+ of WO'ers had no clue who that is, because they aren't old enough to have actually seen a movie that he was in. They had to google who he was.
I'm glad to be one of the 5% who knows who it is - so even though Sidney Poitier may have been in the shadow of great actors like Katharine Hepburn & Spencer Tracy in
Guess Who's Coming to Dinner (1967), I personally remember him from that film in which he has achieved one of his best roles for me personally. RIP💐