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

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

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

"Is this the 23rd hour of The Today Show?,” Letterman asked as he wandered onto the stage to greet Jimmy Fallon.

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

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, ...

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

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 returned to his former stomping grounds at 30 Rockefeller Plaza Monday for a surprise appearance on ...

Fallon was riffing with Paul Shaffer and the World’s Most Dangerous Band, Letterman’s longtime sidekick and band from his time hosting CBS’ Late Show from 1982 to 2015 — Shaffer and co were filling in ...

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