I just happened to start watching this episode of the Partridge Family as I was going through my channels after re-scanning them. I was totally shocked to see Margaret Hamilton guest-starring as Reuben Kincaid's mother. Margaret Hamilton played what is definitely one of the most iconic roles in the worldwide history of movies: the Wicked Witch of the West in the Wizard of Oz. I had no idea that Margaret had ever done television shows, but imdb.com has quite a list. Margaret was 70 years old when this episode was made, but she was still plenty spunky :)
As far as the rest of the plot of this episode, it's a big nothing. But who cares, there's the Wicked Witch of the West!! (Without the green makeup) :) So seven stars from me, just for the pleasure of seeing Margaret Hamilton!