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.

John Oliver, Jon Stewart, Jimmy Fallon, Seth Meyers and more had cameos during the July 21 episode of "The Late Show With Stephen Colbert."

NEW YORK — Stephen Colbert has received support from his fellow late-night TV hosts following his cancellation by CBS, including from his predecessor. David Letterman, who was the host of “The Late Show” for 22 years, used his YouTube channel to post a video montage of the many times he ripped into CBS over the years for various reasons.

Joaquin Phoenix is looking back at the rollercoaster of awkwardness that etched his 2009 interview with David Letterman in late-night history.

Joaquin Phoenix memorably appeared on 'The Late Show' to speak with David Letterman in 2009 while in character for a 2010 mockumentary he and Casey Affleck made

John Oliver is calling the cancellation of The Late Show With Stephen Colbert “incredibly sad.” While speaking to reporters over the weekend, Oliver was asked his thoughts about the news, which CBS revealed in a surprise announcement on Thursday. A daily brief about what matters and what's interesting in Hollywood.

Oliver called "The Late Show" cancellation “incredibly sad" but couldn’t help wondering what chaos Stephen Colbert might unleash on the way out.