David Letterman Primetime Special Throws Back to His NBC 'Late Night' Debut (Video)

Now this is a Flashback Friday!

CBS has unveiled a first look at David Letterman's upcoming primetime special, which dates all the way back to Letterman's very first late-night show on NBC in 1982.

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The Late Night clip, which features frequent Letterman guest Bill Murray, is just one of many memorable moments included in Monday's 90-minute tribute. The special will also highlight some of the show's best Top 10 lists and "Stupid Pet Tricks" segments, funny interviews, emotional interviews, and — of course — that one time Drew Barrymore danced on his desk and flashed a visibly stunned Letterman.

"If you have children, you should wake them up," says host Ray Romano, before adding that the kids should be dismissed to grab the Cheerios during Barrymore's appearance.

Letterman will say farewell on May 20 after 22 years behind the Late Show desk. Before moving to CBS in 1993, Letterman was the host of NBC's Late Night show for 11 years.

David Letterman: A Life on Television will air Monday at 9:30 p.m. on CBS.