Who's Going to Guest-Star on "Sonny with a Chance"?

In a recent interview, Sterling Knight revealed what's in store for upcoming episodes of Sonny with a Chance! Not only will b-baller and JB's BFF Shaq guest-star on a special Halloween episode, but you can expect AllStar Weekend to join Sonny, Tawni, Chad and the gang, too. The most exciting news Sterling shared, though, was that Joe Jonas will make an appearance in the holiday episode!