To find the first hidden extra first go to the "Special Features" menu. Now select the 'Documentaries' link and press your Left button. The word '1984' will now appear in the right bottom corner. Press your Enter button and you'll see the video.
To get the second one, go to the "Special Features" screen then to the deleted scenes. Scroll down until you come to the last title then press your Down button once more. This should take you to some trailers for all of Adam Sandlers films.
All easter eggs were generously submitted by SirDonk