I know him from McHale's Navy, Carol Burnett show, and his own TIM show, but to me nothing beats his role as ice cream man and owner of Elwood the Sheepdog in The Shaggy DA.
He even plays a Dog a couple of times.. A loss to the world of comedy.
This cartoon looks fucking horrible. I was prepared to watch an atheist mantis stand up for his rights against the other mantises who waste their time. What a gip.