It would be interesting to see a list of TV shows from the 1960s and 1970s that John Fiedler wasn't in! It would probably be a very, very short list! He was hysterical on "The Bob Newhart Show", that's for certain!
Don't forget, Gordy the Ghoul in Kolchak: The Night Stalker. Played a morgue attendant who was always open to a bribe by Kolchak to impart some kind of crucial info on a recent monster victim.