On the main menu of Scooby Doo the movie, Scooby throws a scooby snack in the bottom middle of the screen. Press the right arrow button on your remote till it lights up then hit enter. Be warned he picks it up and eats it after a few minutes so you will... more
On the second page of the special features hit left on your remote and the sign with zoinks under it will light up. Hit enter and enjoy.