David Letterman was on track to be one of the great game show hosts of all time if The Riddlers had been picked up in 1977. The proposed NBC daytime series was a lot like Match Game (the #1 daytime TV show in 1977) in that it had a celebrity panel answering questions.
Letterman shines in this loose format, he's hilarious, especially when you consider the many lackluster emcees on television at the time. This was just a couple of years after he left Indiana local television and before his brilliant but short-lived 1980 daytime talk show on NBC. That's where Carson took notice of Letterman and bumped the comic up to late night.
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