got support from a lot of A-listers on his "Tonight Show" debut. The likes of , , , , , , , , , and Joe Namath stopped by the show to pay their debt as they bet $100 each that Fallon would never host the talk show.
GaGa, appearing in a sexy fishnet outfit, whispered something to Fallon's ear before she made her way back to the backstage. came out the last, pouring a bucket of pennies over his new competitor and taking a selfie of them before saying, "Welcome to 11:30, b***h!" Fallon said, "Thanks for believing in me, guys!"