The Persuaders I must echo johnz's comments. Two of the most stilted performance you'll ever be likely to see on a screen. Probably be fine as a comedy show now.
The Andy Williams Show I seem to remember that Andy would always sing a ballad at some point during the show, from the comfort of a rocking chair. Also, each show ended with a very Bungle-esque bear walking on stage in a search for milk and cookies. As an 8 or 9 year old, I could have left the rest of the show, but it was worth sitting through for the bear!!