Have mercy! Jesse Katsopolis and his band Jesse and the Rippers are gearing up for a reunion performance! The Full House band led by actor John Stamos will appear on Late Night With Jimmy Fallon on Friday, July 19, for a special comeback show. Stamos posted an Instagram video of he and the guys singing the sitcom's theme song Everywhere You Look, writing: "Never thought I'd be singing THIS song." WATCH.