Letterman devotes 10-minutes to a tribute to Williams on his show. The two were close friends for nearly 40 years. Letterman:
Two things would happen, because Robin was on the program. One, I didn’t have to do anything; all I had to do was sit here and watch the machine. And, two, people would watch; if they knew Robin was on the show, the viewership would go up, because they wanted to see Robin. And, believe me, that wasn’t just true of television. I believe that was true of the kind of guy he was. People were drawn to him because of this electricity.