John Oliver’s not the only talk show host who can drop in on another show unexpectedly. Last night, the great David Letterman ...

The appearance from the former Late Night and Late Show host offered a reunion with bandleader Paul Shaffer, who is sitting in with his World’s Most Dangerous Band on The Tonight Show this week. The ...

Feb. 11 (UPI) -- David Letterman joined Jimmy Fallon during his monologue on The Tonight Show Monday. "Is this the 23rd hour of the Today show?" asked the former Late Show host, feigning confusion, ...

It was a throwback evening on NBC since Paul Shaffer and longtime members of his backing band filled in for the Roots as they prepped for the SNL 50th concert ...

David Letterman crashed The Tonight Show on Monday night to reunite with Paul Shaffer and poke fun at Jimmy Fallon.

David Letterman appeared on “The Tonight Show Starring Jimmy Fallon,” marking his first appearance on the show since Johnny ...