Barry Williams and Christopher Knight revealed they had a lot of fun filming The Brady Bunch episode, "The Un-Underground Movie.” The Season 2 episode originally aired on Oct. 16, 1970 on ABC, but ...

But in Season 2, producers went to the next level when they cast the real-life children of two of the main stars—as well as the daughter of the show’s creator. The episode was “The Slumber Caper,” and ...