Jimmy Fallon Kicks Off ‘Tonight Show’ With Robert De Niro, Lady Gaga, Lindsay Lohan, Mariah Carey + More [Video]

I'm so happy for Jimmy Fallon. I think he is going to rock the "Tonight Show". He definitely seemed nervous last night. He did have the support of an amazing line up of stars who came out to show support and be a part of his "lost bet" clip. Check it out. Robert De Niro, Lady Gaga, Mike Tyson, Joan Rivers, Tina Fey, Lindsay Lohan and Kim Kardashian and more came out to give Jimmy $100 for losing the bet that he'd score this gig.