I'd watch zombie films, where the zombie outbreak brings about the end of the world, and would often wonder how could such a thing be possible? How could zombies overrun the militaries of the world, especially if the zombies were slow-moving suckers?
I always loved World War Z because of the detailed and sensible way it explained how the zombies took over the world. It was the first zombie story that told its tale on a global scale; it was truly epic. I had been hoping this might be done as a mini-series, possibly on HBO.
Oh well, at least we still have the book.