David Letterman began his Late Night gig as a self-described “gap-toothed, unknown smart ass.” But thirty highly successful years later, Letterman’s comedy formula has evolved: he no longer attends all the meetings or makes all the decisions and stupid pet tricks are a thing of the past.  

Letterman began his television career as a weatherman, but moved rapidly up to anchorman and talk show host. He left for L.A. and, after only three years on the comedy scene there, he found himself guest-hosting the Tonight Show. He talks to Alec about how a quintuple by-pass and the birth of a child have dramatically shifted Letterman’s priorities. 

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