The $300 House challenge - to build a reasonable shelter for under $300 has announced their winners! The full grid of winners is on their site:
http://www.300house.com/blog/2011/06/300-house-open-design-challenge-win...
and a slideshow with detail pictures:
http://www.jovoto.com/contests/300house/ideas/12646
The next stage is a prototyping event, and we'll see if those pretty designs can actually be built reasonably for $300. More on the history of the challenge and on their prototyping efforts is on their blog: http://www.300house.com/