Jonathan Winters. I remember LOVING that guy when he came on the Johnny Carson show. In fact I still miss Johnny Carson, I would always try to wheedle a way to stay up and catch the monologue.  But Winters?  Man, oh man, that guy was brilliant.  Just dig him in this clip from the Jack Parr show in 1964 (before we had a TV), and the riffs he does when Parr gives him a simple stick.