I'm temporarily breaking my fast here on P0lis (see below) to note an article in the Times about floating architecture, which I've already posted about a couple of times. I was also at the inaugural gathering of the Forum for Urban Design last night, hosted by Paul Goldberger, which was a discussion about rebuilding New Orleans, and amphibious housing came up there, too. (The Forum is so new it doesn't have a website yet, but I'll link to it when its up.) Anyway, this amphibious neighborhood idea is obviously getting some traction.
There's also a good slide show accompanying the article.
*Apologies to David Letterman.