The late, greatly missed Robin Williams made a wonderfully manic debut on The Tonight Show Starring Johnny Carson in October 1981. At this time, Williams was heading into the fourth season of Mork and Mindy and was in rare form that night. Luckily, the host was very amused and could keep up with him.
Robin Williams Makes an Insane First Appearance on Carson Tonight Show
Here’s Williams’ final appearance on the show in May 1992. The interview was no less frenzied than the first.