Easter egg: Go to Extra Features on the DVD, then highlight Godthumb for trailers and click right.
Easter egg: Navigate to the posted sign "Death House" (i.e., right of the South point of the compass menu). Press right again; the Thumb stick figure will highlight. Select it and you will see a short outtake of the "Death House" footage.
Easter egg: On the Deluxe Edition DVD, go to previews and there should be a couple movies listed below. Press down till you highlight Special Features and then press the right button twice and the dog's eyes should light up. Press enter and you'll get the "Zombie testers" modeling various make up designs for zombies in the movie. This can also be seen in the Special Edition DVD but under the Special Features.
Easter egg: Go to the special feature menu. Go to the bottom where you see resume. Where it looks like blank space, click the right button and a blue "Parental Advisory: Explicit Lyrics" sticker will appear. Click on it to get a montage of all the profanity Robin uses throughout his performance.