Fallon Explains Hilarious U2 Stage Cameo: 'It Almost Didn't Happen'

U2 recruited Jimmy Fallon and the Roots for surprise cameos for their Wednesday night show at New York’s Madison Square Garden. “It was an unbelievable experience,” the Tonight Show host enthused during Thursday’s episode. “I’ll never forget it. But it almost didn’t happen.”

Fallon’s hilarious spot involved the comedian pretending to be a random…