I've been watching the reruns of WHAT'S MY LINE? on GSN and two of the recent Mystery Challengers had vague DS connections.
First, Ray Milland was on and mentioned that he was in rehearsals for the play, HOSTILE WITNESS, the cast of which included Jonathan Frid.
Second, Hayley Mills made an appearance. She was in NYC for the opening of THAT DARN CAT, featuring Grayson Hall in a supporting role.
Neither DS cast member was mentioned, but nonetheless, I enjoyed seeing these references to the pre-DS work of two of its biggest stars.
Regards,
John