Was supposed to be one of the "heroes" of Hogan's Heroes (1965). He is in the pilot episode only, The Informer (1965). He decided not to be in the series because he didn't believe that one could have a comedy take place in a German POW camp.
On why he turned down a regular part on Hogan's Heroes (1965): "The premise to me was both false and offensive. The Nazis were seldom dumb and never funny."