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

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

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 ...

Fallon’s brief stint in the production – his one-week performance ended February 2 – saw the weekly grosses jump by a huge 46 ...

TV star and former SNL regular Jimmy Fallon made his Broadway debut last night, even if it won’t be particularly a ...

Jimmy Fallon joked that actor Sebastian Stan has gone full-blown method after starring as President Donald Trump in “The ...

David Letterman made a surprise appearance on The Tonight Show, crashing Jimmy Fallon's monologue to tell a few jokes and ...

Michelle Zauner and a small orchestra brought the For Melancholy Brunettes (& Sad Women) song to The Tonight Show ...

Fans of electric musical performances would have been wise to tune into Monday's "Tonight Show Starring Jimmy Fallon." The ...

This is not the first time Rob Lowe has mixed up notable names as he once accidentally congratulated the wrong actor for a Golden Globes win ...