"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 ...

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, ...

The British host of “Last Week Tonight” said he wanted to be “the first to welcome America to its monarchy era.” ...

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

Tina Fey and Amy Poehler burst from behind the curtain to interrupt Jimmy Fallon ’s “Tonight Show” monologue on Wednesday.

Tina Fey, Amy Poehler, and Seth Meyers held a reunion with Jimmy Fallon last night on The Tonight Show. Fey and Poehler interrupted the host’s monologue, much to his (feigned) surprise, and critiqued ...

Elon Musk took his son to the Oval Office, so Jimmy Fallon saw no reason not to walk onstage with a child, too.

On Tuesday, Feb. 11, the Tesla CEO joined President Donald Trump for a press conference at the White House's Oval Office.

Around the 3:47 mark of Jimmy Fallon's monologue on Monday's The Tonight Show, David Letterman came out of retirement to crash the party. "Is this the 23rd hour of the Today Show?" he quipped, before ...