Easter egg: On the menu, go to extra features and click to the right, there's a music video starring Pepper and Dr. Frankenthumb.
Easter egg: At the main menu go to Sneak Peeks, place the cursor on the wave logo (that's the one that takes you back to the main menu) then click left on your remote control, you should see an outline of Stitch, press enter to see a preview of Stitch's upcoming movie.