Insert disc 2 of this DreamWor - Gladiator
Insert disc 2 of this DreamWorks movie and scroll down and select the word "More."
Enter the "Trailers and TV Spots" area and press the left arrow on the remote, and the amulet around Richard Harris' neck will turn red.
Press Enter and enjoy a hilarious "Chicken Run" trailer, parodying the epic "Gladiator" ("An egg that became a chicken, a chicken that became a leader!" and so forth).
A second Easter egg can be found on this disc by going to "Original Storyboards." Click on the "More" tab and choose "Rhino Fight."
Press the up arrow, and the rhino in the middle of the screen will turn gray. Press Enter to read about a deleted scene featuring a rhinoceros.
You can even read the script, view the storyboard and watch test footage of the digitally created rhino.