Jimmy takes a moment to introduce Paul Shaffer and The World's Most Dangerous Band, who will be filling in for The Roots ...

David Letterman made a surprise cameo on The Tonight Show Starring Jimmy Fallon on Feb. 10, interrupting Fallon's monologue ...

The appearance from the former Late Night and Late Show host offered a reunion with bandleader Paul Shaffer, who is sitting ...

TV legend David Letterman made a surprise appearance on NBC’s “Tonight Show” on Monday night during host Jimmy Fallon’s ...

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

On Feb. 10, David Letterman stopped by “The Tonight Show Starring Jimmy Fallon” while his former bandleader, Paul Shaffer, ...

Jimmy Fallon viewers were left surprised earlier this month when The Roots, the show's longtime house band, were noticeably absent.

It was a night of surprise returns on late-night Monday (February 10), as not only did John Oliver make a surprise appearance ...

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, ...

NEW YORK CITY, NEW YORK: Legendary late-night TV icon David Letterman gate-crashed Jimmy Fallon 's 'Tonight Show' monologue on Monday night, February 10, strolling onto the stage while the host was ...