Suite Life On Deck, The Easter Egg - Bubba's Debut

On the episode where Zack and Cody miss curfew to go see The Starlight Follies, when Zack is presenting his project on Las Vagas, on the Blackboard behind him it has a list of names. And one of the names is "Bubba Sprouse," which is the name of the real-life twin's dog.