David Letterman has shared a video of his most scathing comments about CBS just days after The Late Show with Stephen Colbert was canceled after 10 years on air

In 1993, he started working as a writer-producer on Late Night with David Letterman, which aired on NBC. Burnett ultimately made the move to CBS with Letterman when The Late Show was picked up at that network.

Update: Stephen Colbert to replace David Letterman on "Late Show" It's the end of an era: David Letterman announced Thursday that he's retiring from CBS' "Late Show" sometime next year. He made ...

Ten years on, CBS has snatched the crown off its head. The network appears to have grown so dismayed with the state of late-night television that it has unceremoniously canceled one of the genre’s most successful stalwarts: In a statement last night,