We have a winner. San Diego's planned sky-scraper is positively flaccid compared with the "Green Bird" tower design proposed for London. No, I'm not making this up. More photos and discussion here. I'm not sure whether it is actually going to be built; but it's a real design.
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2007/07/great-moments-in-architecture-ctd/226892/
