From the main menu go to "Previews". Navigate to "Main Menu" and press your right button to highlight the dog's eyes and press your Enter button. This will give you a clip on make-up tests for the zombies.
From the main menu, go to "Special Features". Then go to "Filmographies" and select Milla Jovovich. From her first page press your down button and a yellow eye will appear above the photo. Press your Enter button to see a clip of Jovovich joking around during a fight sequence.
On the Set-up section from the main menu, there is a five digit code. Write down the numbers and return to the main menu. Highlight "Special Features" and press your left button. You'll get a flashing key that gives you half a minute to enter the code.
All easter eggs were generously submitted by SirDonk