David Letterman's YouTube page posted a 20-minute supercut of the host bashing and mocking CBS following news of "The Late Show's" cancellation.

David Letterman took aim at his former employer, CBS, over the cancellation of 'The Late Show With Stephen Colbert.

Indianapolis native David Letterman was a big fan of the "Greatest Spectacle in Racing" long before he became a TV star or an IndyCar team owner.