Pre-Production Artwork
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.
Bonus Clip
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.
Storyboard
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.