DVD Production Credits
Go into [Bonus Features]. Click the arrow to go to the next page on the menu. When you get to the next page, go to the [Back] button and go [Left] (There should be a blank box next to the back arrow). If you highlight the box, it will say "DVD Credits" in it.
Lilo & Stitch 2 Preview (REGION 4 ONLY)
Go to the [AVANCES] (Sneak Peeks) menu and then, immediately press [Left] two times on your remote control.