Kind Hearts and Coronets
(Robert Hamer, 1949, UK) is another great black comedy whose dialogue is unrealistic, but thoroughly elegant and enjoyable.

Nobody really talks like they do in a Sorkin script, with the rhythmic beats and perfect timing. If you watched old screwball comedies like "His Girl Friday", no one rattled off at that speed, either. The stylized dialogue and pacing is what makes it an art. The sophisticated and often word play choices in the dialogue underscored a story bemoaning the growing illiteracy and stupidity of the American public.
Having said thatthere weren't any words in this movie I didn't understand. The first time I saw it was in high school and I've seen it dozens of times since then.