“From New York, one of the most exciting cities in the tristate area, it’s ‘Late Night With David Letterman’!” So began the very first episode of “Late Night,” 40 years ago this week, featuring guests Bill Murray and Mr. Wizard. Letterman’s offbeat humor and sarcastic wit entertained late-night viewers for 33 years on two networks. Here’s how it all started. | AARP

David Letterman returns to late night and crashes the monologue to catch up with Jimmy and his former sidekick Paul Shaffer! | The Tonight Show Starring Jimmy Fallon

David Letterman returned to "The Late Show" for the first time in eight years since he retired from the show in 2015. https://cnn.it/49KjKjg | CNN