Just read trivia about The Constant Husband (1955), a UK movie directed by Sydney Gilliat.

"First shown in the United States on NBC television, 6th November 1955, but with twenty minutes cut so that the film could be shown with commercials in a 90-minute time slot. This was the first time that a feature-length film premiered in the United States before reaching the theaters. It was also the first time a feature film was broadcast in color, but, since few viewers had color receivers at this time, most people saw it in black and white."