In 2018, John Travolta appeared on The Tonight Show to celebrate the 40th anniversary of Grease and gave Fallon a formal lesson on the move, which he had suggested when the movie was filmed.

Neil Young is a fan of Jimmy Fallon's impression — and joined on "Two Neil Youngs on a Tree Stump" In 2014, Young was a guest on The Tonight Show and confirmed that he'd been watching.

Jimmy Fallon made a surprise appearance at Nathaniel Rateliff & the Night Sweats’ sold-out show Thursday, March 27 at Madison Square Garden in New York City to the delight of fans at the iconic ...

What the show actually did was get random people to perform Legend’s hit song on karaoke… and then Legend and Fallon gave lip-sync performances to the random karaoke.

Clipse Perform “The Birds Don’t Sing” On ‘The Tonight Show Starring Jimmy Fallon’ How these two men held it together on stage while performing this song is beyond us ...

Jimmy Fallon and The Roots joined Tom Cruise and the cast of "Mission: Impossible - Final Reckoning" to sing the franchise theme song a cappella.