zombieland: 7 Double Taps out of 10...
I have often wondered what would happen when zombies and vampires ate all of the available food source (i.e. Humans). well, someone is making a movie about it (Vampires)-
Daybreakers.
http://www.imdb.com/title/tt0433362/
why do zombies eat humans and not other zombies?
Answer: healthy flesh is tasty flesh...