I, too, used to watch reruns of YDS! when they aired once, then twice daily on then-Metromedia-owned KMBC-9 in Kansas City back in 1971. They were all from 1969 which was just as well; that last year of shows was partially bumped by WDAF-4 when NBC aired them, so they were new to me.
One week of shows I was excited about seeing (but never got to see in their entirety, just the Monday and Friday shows) had Amanda Blake and Vin Scully as the celebs, and I knew Vin was there to plug his upcoming It Takes Two series. It wasn't until I saw the Monday show that I found out when his show's debut date was, and I audiotaped some segments of the two shows I saw that week.
During another week of shows in which one of the stars was Jo Anne Worley, one of the names they had to guess was "Judy Garland", and before and after that round was played, the regular audio faded out and was replaced by an voice-over by John Harlan saying "This show was taped prior to the death of Judy Garland".