SHREK FUN FACTS
On both discs from the 2-disc set, go to the main menu and from there to the Special Features menu and highlight the Main Menu entry at the bottom of the screen.
Now press the Up arrow key on your remote to highlight the bellybuttons of the Gingerbread Man.
Press Enter now and you will get a Shrek Fun Fact – a little piece of trivia from the movie.
Every time you select this hidden feature, a randomly selected Fun Fact comes up.

KARAOKE
Another Easter Egg is hidden on the second disc of the set.
From the main menu, go to the Play menu entry and press the Up arrow key to highlight the music note in the background.
This is the same Karaoke from disc 1