Insert the 2nd disc & select 'The Production', on the next menu highlight 'Development Hell Part 1' and press Right to highlight some slashes. Press Enter for 'Cabin Fever'.
Goto the 'Deleted Scenes' menu on the 2nd disc and highlight the Right Arrow. Press Up and a bloodsplatter will appear on the screen. Press Enter for a clip of the filmmakers discussing an alternate ending.
Goto 'The Production' on the 2nd disc and select the 'Visual Effects Featurettes'. On the following menu press Right and some bloody slash marks will appear. Press Enter for the two Pre-Vis Fight Scenes 'Put the dog to sleep' and 'Man the torpedoes'.
All easter eggs were generously submitted by Bjorn_K