Call of Cthulhu, The Easter Egg - "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn."

Click on the heading "Special Features."
Scroll down through the 5 or so items there with the down arrow on your remote. Each item will be highlighted as you go.
Before you reach the bottom "Main Menu" heading, you will reach a spot that doesn't highlight any feature items. When this happens, press "enter" or "play" or whatever button you would normally press on your remote to select a highlighted feature.

The egg is a very brief clip in sound and color (it's a silent, B&W film) of the actor playing Professor Webb (the guy with the eyepatch) intoning the mysterious words of the eskimo Cthulhu cultists.