Adventureland Easter Egg - Giant Ass Panda

On the Main Menu of the Adventureland DVD, press the "Up" button on your remote (or, if you're viewing on a computer, simply move your cursor over the bottom of the "A" in "Adventureland). A red ring will appear over the bottom curve of the "A" in the title.

Once you select this, you will be taken to a screen with a picture of a panda which will read "Congratulations! You've won a Giant Ass Panda!"