Easter egg: On the Main Menu, when Scooby-Doo is startled by the ghost and he drops the Scooby Snack in his mouth, highlight it and then press Enter. This will access a short featurette on how it rained on set, during filming. Also, on the Special Features' second page, hit left on your remote and the sign with "Zoinks" under it will light up, then hit Enter.
Easter egg: On Disc 2, go to the Chamber Challenge in Activities and the narrator says something about a secret passage. Well, at the start instead of clicking the center forward arrow, be quick and press 'LEFT' on your remote, then it reveals the secret passage. On the U.S. release press 'LEFT' and then press 'UP' and again it shows the secret passage, bypassing the questions.
Easter egg: On the film disc (disc 1) of the Theatrical Version, in the language selection menu there is a THX logo somewhere. Highlight it using the arrows on your remote, then enter the number 1138 while you have it highlighted (may vary on different DVD players, on mine I have to push a little 10 button, then 1 1 3 8, which makes 1138). You will then be treated to a sequence of bloopers from the film.
Easter egg: Easter Egg on the Special Extended DVD: Put in the first movie DVD (The Two Towers Part 1), go to Select a Scene. Scroll all the way down past the last scene ("Of Herbs and Stewed Rabbit") and there should be a ring cursor beside "New Scene" and then click on it. It's Gollum's acceptance speech from the MTV Movie Awards. Because of the content, it is not appropriate for children. Please note that this easter egg is not found in the U.K. version.
Easter egg: First, watch the movie or watch a special feature, then go to the main menu. In the main menu, highlight any of the four options, but don't press enter. Press the right button and the "Tribulation Force" part of the title will turn from a yellow color to a red color. Press enter. You will hear a funny story from the Director of Photography.