Yes, No, Maybe So: "World War Z"

Remember that classic Robert Frost poem?
Some say the world will end in fire,
Some say in ice.
From what I’ve tasted of desire
I hold with those who favor fire.
But if it had to perish twice,
I think I know enough of hate
To say that for destruction ice
Is also great
And would suffice.
Sadly, it's incredibly dated; everyone knows that the world will end in a zombie apocalypse!
World War Z, which opens next June, is the latest in a seemingly endless stream of zombie apocalypses from Hollywood. The first trailer has arrived. Let's break it down...