Such a cool concept! There are now various companies out there specializing in making housing out of storage containers and leftover shipping containers. According to BusinessWeek,
this is one of the most important inventions that will flourish in the next 10 years. Some companies are building them in third world countries, where they will cost about $10K. They're so cute!
Here's a virtual blueprint (or "greenprint" as they're calling them) of one by Envision Prefab, based in Boca Raton, FL:
And I LOVE this one! A container house designed by Leger Wanaselja. It's located on the top of a hill in the East Bay:

Leger Wanaselja Architecture
I can't wait to get my own cute little house to decorate! Target is really stepping it up in their home furnishings department: