I'm still trying to figure out if the zombies were the home buyers or the bankers -- or possibly both -- but zombies screwing things up is my explanation and I'm sticking to it. Because, clearly, somebody's brains got eaten.

A possible economic collapse is a disaster, albeit one that tends to happen in slower motion than natural disasters, riots, terrorism, enemy armies on your doorstep, your own country's army on your doorstep, or zombies that want to eat your brains.
It's wise to be prepared for all of the above, and this article contains some common-sense tips on steps you can take to lessen the impact of various and assorted disasters, from economic meltdowns to that oh-crap moment of utter and terrible surprise as the world goes to Hell in one shattering instant. Many of the preparations you can make are not specific to one disaster but rather encompass lots of unfortunate possibilities.

The good news is that if you're prepared, and smart, and use some common sense, you've got a good chance of surviving most disasters just fine.