Speaking of '60's-era TV actors, Frank Cady (Sam Drucker on PETTICOAT JUNCTION) was in that production of ON BORROWED TIME.
And now that I think of it, Carl Betz (Donna Reed's husband on THE DONNA REED SHOW) was in the Atlanta production of the same play a few years later.
Would have liked seeing George C. Scott's Broadway production in the early 90's.