Suite Life of Zack and Cody, The Easter Egg - Reference to High School Musical

On the episode where Maddie is Making a movie with Mr. Moseby, pay attention to his warm-up exercises. He does the same thing that Sharpai and Ryan do to warm up. Because Ashley Tisdale is in both High School Musical and The Suite Life of Zach and Cody, it makes sesce why they would add this