Easter egg: Go to the second page of the "special features" menu. Once there, highlight any one of the special features and press right to make a symbol appear on the pyramid. There will be about a ten second clip of behind the scenes footage.
Easter egg: Go to the Main menu, then to Special features. On the Special Features page highlight the little "New Line Cinema" logo, to open a page of credits.
Easter egg: On the special features part, go to galleries and select the wolverine dog tag at the bottom.