Tina Fey, Amy Poehler, and Seth Meyers appeared on 'The Tonight Show' alongside host Jimmy Fallon ahead of the 'SNL50' anniversary special.

David Letterman was famously denied the chance to take over The Tonight ... his way to the show 33 years later on Monday evening when he crashed the stage midway through Jimmy Fallon’s opening ...

Among the laps, Hurts, running back Saquon Barkley, and the entire Eagles starting offensive line found themselves as guests ...