DVD Easter Eggs
At a dinner during easter my cousins husband-to-be pointed out to me, that the MTV Music Award spoof of the council-scene from Fellowship of the Rings was accessible on the extended version DVD by following some obscure keypresses.
He instructed me to look it up using Google. Behold! Google sent me to DVD Easter Eggs that lists over thousand Easter Eggs. Feel free to call me ignorant, but I never realized that DVDs containing this were this widespread.