Jack Benny, naturally. Here's his first show for CBS after network head William Paley stole NBC's entire comedy lineup, as David Halberstam recounts in The Powers That Be (2 January 1949).
A Vic and Sade. "Robert and Slobert Are Scoundrels" (24 July 1944). Just gonna keep playing these until I'm dead and runny around the edges.
It's Hunker J. Sponger.