From Tina Fey to Robert De Niro, Lady Gaga to Mariah Carey, all of Jimmy Fallon’s famous friends stopped by his first Tonight Show episode to pay up after betting Fallon would never, ever get to host the legendary show. And so Jimmy Fallon went into his run as Tonight Show host the way Jay Leno went out: with a cavalcade of celebrity cameos. Leno did not, however, dance the Carlton or twerk, slack-jawed and dead-eyed, in front of Will Smith while demonstrating three decades of hip-hop dance moves, so clearly Fallon is already putting his own spin on the proceedings.
