On Feb. 10, David Letterman stopped by “The Tonight Show Starring Jimmy Fallon” while his former bandleader, Paul Shaffer, and his World’s Most Dangerous Band filled in for the Roots.

David Letterman was famously denied the chance to take over The Tonight Show when Johnny Carson retired in 1992, but he made his way to the show 33 years later on Monday evening when he crashed ...

David Letterman was famously denied the chance to take over The Tonight Show when Johnny Carson retired in 1992, but he made his way to the show 33 years later on Monday evening when he crashed ...