7 Insane Easter Eggs Hidden in Movies and TV Shows

From Cracked.com, it's their list of 7 Insane Easter Eggs Hidden in Movies and TV Shows.  The easter eggs they include are mostly pretty interesting, and I hadn't heard of most of them.  For example, there's a hidden movie in "The Simpsons", a hidden language in "Futurama", and a couple movies that would be spoiled if you understood another language.  Click above for the full list.