From the [Main Menu] go to [Bonus Features]. Select the menu entry for the [Alternate Opening]. Press [Right]. Press [Down], this will highlight one of the bolts on the wheel. Press [Enter], and you will see a clip showing preproduction artwork for some of the movie's characters.
Select the [Backstage Disney]. Highlight [Welcome To Sky High]. Press [Right]. Press [Down] key, this will highlight the guinea pig on the right side of the screen, below the school bus window. Press [Enter] and you will see a clip about how hard it is to find a good guinea pig actor.
From the [Main Menu] highlight [Scene Selection]. Press [Right]. Press [Down]. Press [Left], This will highlight a circle in the dashboard of the bus. Press [Enter], and you will see a storyboard version of the cafeteria fight scene, which was part of the original pitch of the idea by the filmmakers to the studio.