Well, with all the glamor and intrigue around here concerning FBI and the case of the missing definite article, let's have an episode of I Was a Communist for the FBI. This one is called "Use Only as Directed" (8 July 1953). The commies try to screw up a noble drug company's test of a new miracle drug. Somebody tell Michael Moore.
And Jack Benny: "Jack Returns From a Trip to Europe" (10 October 1948). The Lucky Strike commercial spawned a running gag the show used for years--the yodeling guy only Jack can hear.