From Wikipedia:
You Bet Your Life is an American radio and television quiz show. The first and most famous version was hosted by Groucho Marx, of Marx Brothers fame, with the unflappable announcer and assistant George Fenneman. The show debuted on ABC radio in 1947, then moved to CBS in 1949 before making the transition to the NBC radio and television network in 1950. The television version was changed very little from the radio version (which finally ended in 1959). It was filmed before a studio audience, then slightly edited for television broadcast. In 1960 it was renamed The Groucho Show and ran a further year.
It still appears in re-runs to this day, often on stations and networks aimed at a "family" audience. Most of the episodes have fallen into the public domain.
Groucho would be introduced to the music of "Hooray for Captain Spaulding", his signature song introduced in the 1928 Broadway musical Animal Crackers. Fenneman would say, "Here he is: the one, the ONLY..." and the audience would finish with a thunderous "GROUCHO!" In the early years Groucho would feign surprise: "Oh, that's ME, Groucho Marx!"
