"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 ...

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

John Oliver wasn't the only late night icon to crash this week. "The Tonight Show" started Monday off with a surprise ...

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

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, ...

Letterman began his late night TV career at NBC, where he hosted the groundbreaking “Late Night With David Letterman” from 1982 to 1993. The show followed Johnny Carson’s “Tonight Show.” When Carson ...

Letterman made his shocking appearance during host Jimmy Fallon‘s opening monologue, leaving viewers at home and those in the ...

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

While Paul Shaffer filled in the for The Roots on “The Tonight Show Starring Jimmy Fallon,” he was reunited with a surprise ...

Paul Shaffer, who spent 33 years as David Letterman’s musical director, is returning to late-night and reuniting with his ...