I found this article to be an interesting history of the evolution of TV lighting, with examples ranging from I Love Lucy to Game of Thrones, and a lesson or two for still photography.
An excerpt:
Back when Albert worked on the last two seasons of The Wonder Years, “the general approach was backlight, backlight, backlight—even when it wasn’t really motivated,” he said. “Where that came from was black and white, where the only way often to separate a character who was gray, and a background that was gray, was to give them a hot backlight that made them not just melt into the background. And it carried over when the push to color was made. It was just the way it was done in Hollywood.”