This skit from
The Jack Benny Show (1959/60ish) featuring Rod Serling is pretty funny. Jack Benny gets sucked into the Twilight Zone after telling Rod Serling he doesn't believe in it and that Serling's writing makes no sense!
(Although there is an absolutely awful bit of racial stereotyping going on that is typical of "comedy" of the time but the rest of the clip is very funny...)