Not the film, which I've never seen, but the original: "In the Heat of the Night"
I pulled out my DVD of this film for the first time in a few years. Still FUCKING AWESOME film. When I first saw it I was about 15 but my conviction of the backward nature of the 'deep south' of America was such that I believed it couldn't be more than 5 years old.
Yeah, clearly I'd never knowingly seen Steiger or Poitier before...