Jimmy Fallon and The Roots Join U2 at Madison Square Garden
Other celebs in attendance included Sir Paul McCartney, Alicia Keys and Nile Rodgers
Fallon -- who held a sign in front of his face that read “Singer with a broken finger” -- was invited by Bono to join the group in the circular stage at the far end of the catwalk.
“I’m a big fan of Irish people that fall down and hurt themselves,” the Tonight Show host quipped before the Edge fired off the opening chords of “Desire.”
Fallon -- who donned the famed Bono glasses to mimic his moves -- even whipped out a harmonica to close out the jam.
"It's not easy being Bono," he surmised.
The song was followed up by another surprise appearance by The Roots for a rendition of the band’s love song to New York City, “Angel of Harlem.”
Highlights from the concert included a performance of “Out of Control” from the 1980 release, Boy, and the show closer, “One.”
As usual, the performance was broadcast on U2's Meerkat feed. Every night, a female fan is invited onstage to dance with Bono for "Mysterious Ways" before being handed a phone to broadcast the action globally over Twitter.