He was known for his groundbreaking roles in dramatic film,<ref>In 1967 three of his movies -- ''To Sir, With Love'', ''In the Heat of the Night'' and ''Guess Who's Coming to Dinner?'' -- led all others at the box office. [https://www.nytimes.com/books/00/05/28/reviews/000528.28sayret.html NY Times]</ref> such as: | He was known for his groundbreaking roles in dramatic film,<ref>In 1967 three of his movies -- ''To Sir, With Love'', ''In the Heat of the Night'' and ''Guess Who's Coming to Dinner?'' -- led all others at the box office. [https://www.nytimes.com/books/00/05/28/reviews/000528.28sayret.html NY Times]</ref> such as: |