From the disc's Main Menu go to the 'Special Features' section. There, highlight the menu entry 'A Heros' Journey: The Making of Beowulf' and then press the 'Left' arrow key on your remote control. An icon will appear on the screen and if you press the 'Enter' key on your remote you will be rewarded with a sequence called 'A Coffee Break with John Malkovich.' It is a 1:12 minute clip showing John Malkovich making an espresso while in his full motion-capture body suit that was used to digitize his movements for the film.
All easter eggs were generously submitted by SirDonk