"Il Gattopardo" and "Gone With The Wind"
I was struck by the fact that Visconti's masterpiece was set pretty much at the same time as "Gone With the Wind" and also deals with the manners of an aristocracy under threat because of a civil war. Of course, both movies are adaptations of famous novels, beautifully filmed, and epic in their scope. I particularly admired "Il Gattopardo" for the way that it avoided ever veering into melodrama. (That doesn't mean I do not also like the way GWTW veered into meldrama about two minutes in, since it was magnificent melodrama).