Darren McGavin and Don Knotts in one day.
As a kid, "Kolchak: The Night Stalker" was the only thing that would bring me in the house before it got dark in the summer, and The Old Man in "Christmas Story"...
"Frah-Gee-Lay, it must be Italian"
Don Knotts' best stuff was from the 60's. Barney of course, but also "The Incredible Mr. Limpet", "The Reluctant Astronaut" and "The Ghost and Mr. Chicken".