The Twilight Zone was also one of these. Big companies or products would sometimes sponsor them such as United States Steel or Lux.
They would have different movies stars on each episode and do a whole different story each week, they didn't follow a storyline the way TV does now. When I went to read about them, there were a gazillion of them.
It would be interesting to see how this kind of show would be done with today's stars.

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