Late night TV legend David Letterman made a surprise appearance on NBC’s “Tonight Show” on Monday night during host Jimmy Fallon’s opening monologue ... for good in 2014, while Letterman ...

David Letterman stopped by "The Tonight Show" on Monday to reunite with his former sidekick Paul Shaffer. Photo courtesy of NBCUniversal ...

Late-night TV legend David Letterman returned ... much exactly like this,” Letterman told Fallon. However, “we didn’t do the Chuck E. Cheese crap.” Fallon then offered Letterman the chance to take ...

but he made his way to the show 33 years later on Monday evening when he crashed the stage midway through Jimmy Fallon’s opening monologue. “Oh my God, David Letterman!” Fallon said in mock ...