Hey, you know what, I've gotta go on that 'Letterman' show. That show is so lame.

- Al Gore

I'm a big Letterman fan.

- Andy Samberg

I don't know about you, but I can never get enough David Letterman.

- Barbara Walters

Letterman... he got his problems. We don't get along too well.

- Harvey Pekar

'The David Letterman Show' is a show of comedy.

- Jesse Ventura

On Letterman and Leno, it always bothers me when they go outside the studio and it's daytime.

- Jimmy Kimmel

It's not like the old competition that you had between Leno and Letterman. It's a friendly competition between Fallon and Stephen.

- Jon Batiste

I've been on Letterman a couple of times. I've been on Leno more than a couple times, and now Letterman hates me because I've been on Leno more than him. They're very jealous of one another, as you know.

- Mitt Romney

When I was growing up, I wanted to do Letterman and I loved that live, in-studio model. I still would do something like that.

- Scott Aukerman