Can It Be So???

So i was reading an article on the web about 2011 economy crashing. Do you know that our US dollar has dropped 11% in the last 7 months of 2010?. I went on you-tube and was watching some videos that people have posted about food storage, some people have made their basements into food storage as well as plenty of emergency supplies. I'm wondering if these people arre extreme or just wise?. I guess I will start stocking up on some things, but right now I'm just trying to mainly focus on starting a garden. Are any of you doing the same? if so what are you stocking up on?
God Bless..............