This 1939 Civil War epic set audience records for a movie presentation on TV when it was shown, for the first time on the small screen, as a two-part NBC special in the mid-Seventies, just before the home-video revolution. Now, instead of seeing it on a small square screen with tons of commercials, you can watch it on widescreen, high-definition TV, and in a single sitting, on TCM, where it’s uninterrupted as well as uncut. Clark Gable is Rhett Butler, and Vivien Leigh, today’s TCM b