Easter egg: On Disc 2, go to trailers, and select Theatrical Trailer #3. While the trailer is playing, input the following numbers in order (slowly): 5 6 5 3 7 (JOKER). The trailer will restart and show a modified version of the original trailer, with Joker scribbling all over it. This is a reference to the marketing campaign promoting the movie, as fans who completed the entire set of events were greeted with the third "The Dark Knight" trailer, modified by the Joker.
Easter egg: On Disc 2 of the Special Edition, there are several easter eggs which are very easy to find. They can be accessed by highlighting the small areas of the "comic book", which include a crack in the wall, Batman's reflection in a puddle and the Scarecrow's eyes. The unlocked features include a stunt rehearsal reel and CG demo.
Easter egg: At the main menu, press enter on Play. You will then be given a choice to either watch the movie with just one random ending or all three endings. Choose to watch the movie with one random ending and press enter. Note: The entire movie from this point must be watched from beginning to end. When the movie ends and the main menu reappears, press down on the control three times and the little magnifying glass will turn green. Press enter and you can then choose which ending you want to see.
Easter egg: On the three-disc special edition, there are 3 hidden features. On Disc 2, enter the 'Production' menu, then highlight main menu and press right to highlight a hidden symbol. On the same disc, in 'Pre-Production', go into 'Prep', highlight 'Safe Cracking School' and press right. On Disc 3, go to the fourth page of 'Visual Effects', highlight 'CGI Propane Tank' and press right.
Easter egg: On Disc 2 of the limited edition DVD, select the Clock icon on the main menu. When you get a series of questions, pick C for all of them, until you get 4 pics of a woman changing her tire, then put the pics in reverse order. If done right, the credits will start to play backwards, then the movie plays in the correct order with the phone call scenes being first.
Easter egg: On the 2-Disc Director's Cut DVD (Region One), if you can complete the entire trivia game (which includes around 50 or so questions, some of which are extremely hard), you are able to view a hidden video.
Easter egg: On disc 2 of the DVD, click on the comic. When the next screen appears, click on the evolution of Spider-Man and then rogues' gallery. Click on any of the villains' pictures. When the pictures appear you can get a larger rotating picture of Electro, Venom and Scorpion by highlighting the Spider-Man head at the bottom of the screen of this villain and pressing down. This then brings up an outline of Spider-Man and you then just simply click on it.
Easter egg: This is on the Special 10th anniversary DVD. On second disc of the set go to the 'Special Features' section. There, select the 'Critics Commentary' menu option, followed by the 'Up' arrow key on your remote control. This will take you to 3 minutes of rolling DVD production credits, accompanied by cool background music. Also on the second disc of the set, select the 'K-Billy Radio Interactive Radio' and choose the last channel on the far right. Then, press the 'Enter' key on your remote control. This will allow you to view a re-enactment of the infamous ear-cutting scene from the film, as played out by some action figures, with the original footage from the film running in a small window.
Easter egg: On the 2nd disc, if you go to dissection then hit the down arrow then the right arrow, it will tell you the story of Billy the puppet.
Easter egg: In the "special features" section of the main menu, go to the top of the list of features, and hit the left arrow button on your DVD remote. A blue silhouette of a mini cooper will appear in the top left of the screen. Hit enter and we see Seth Green running different takes of the scene where he is alone in the car imitating Rob and Becky, the cable repair girl.
Easter egg: This feature is found in disc 2. On the main menu highlight the first item on the list. Push up and then push right it will take you to a fun montage.