Letterman is retiring in 2015 ... and he will be missed
Published: April 3, 2014 07:04PM
Updated: April 3, 2014 04:23PM
In this Jan. 3, 2011 file photo provided by CBS Broadcasting, host David Letterman is shown on the "Late Show with David Letterman," in New York. (AP Photo/CBS Broadcasting, John Paul Filo).

In an installment of the “Late Show” that will air tonight (10:35 p.m., CBS/Ch. 2), David Letterman announces that he will be retiring in 2015.

It’s a day I never thought would come. He’s the longest-running late-night host in TV history, surpassing his mentor, Johnny Carson. (Carson hosted “The Tonight Show” for 30 years; Letterman will have a combined 33 years as host of “Late Night” and “Late Show.”)

It’s too early to write the tribute. It’s even a little bit too early to start speculating about who will succeed him.

But not only was Letterman the first guy to make the post-”Tonight Show” time slot a talk-show success (with all due apologies to Tom Snyder), but Letterman was the first guy to establish a truly successful alternative to “Tonight” on another network.

And he outlasted Jay Leno. Which is also a subject for another time.

Right now, I’m just grateful that I’ve been able to watch Letterman for most of my life. Thanks, Dave!