Danny Tanner, Uncle Jesse and Joey Gladstone all came to Jimmy Fallon's aid when he had trouble sleeping on the Late Night.

Bob Saget, John Stamos, and Dave Coulier dropped by to reprise their roles from the hit 90s show Full House for the skit. Amusingly Bob Saget looks exactly the same while Stamos had to put on a mullet extension and Coulier put on a mop wig (nice acid-wash jeans, too).

After Jimmy Fallon says he can't sleep because he's scared about leaving Late Night to host the Tonight Show, the three guys soothe Fallon and sing him to sleep with their famous "Teddy Bear" song.

Saget then tells Jimmy to go to bed because "It's late, no one in their right mind is still awake." A confused Jimmy replies, "But that's when my show comes on." The three guys reply, "Exactly."

The three former Full House Stars have been hanging out all week to promote their upcoming Super Bowl commercial for Dannon's Oikos Greek yogurt, which John Stamos has been promoting for several years now.