Dan Phillips gave a talk to a group at TED showing a dozen homes he has built out of recycled materials.
http://www.youtube.com/watch?v=3he5W0jsFpg&feature=related
http://www.youtube.com/watch?v=zwfLUxc5nLM&feature=channel
http://www.youtube.com/watch?v=z1U0OjXdsOg&feature=channel
http://www.youtube.com/watch?v=jreYlJqTkT0&feature=channel