So I'll be posting some of my favorite Letterman clips on Nifty Niblets in the days and weeks and months to come. But let's start by sharing a clip of the man who was one of Letterman's heroes: Johnny Carson. Carson did a surprise walk-on to The Late Show with David Letterman when Dave was doing a week of shows in California.
It happened on May 13, 1994, and it was the last time Carson ever appeared on television:
A nice companion piece to the above is the heartfelt tribute by Letterman to Carson on the first Late Show that aired following Carson's death in 2005. It begins with Letterman telling jokes written for him by Carson in the opening monologue: