Here is a video of the finalists, from The Forward:
Union Square's High-Concept Sukkahs from Jewish Forward on Vimeo.
When I first saw some of these designs, I thought that there was no way that they were kosher sukkot. However, it turns out that the designers used the services of a rabbinical student from Yeshivat Chovevei Torah, a (very) modern Orthodox institution, in order to ensure that each of the designs were halachically acceptable.
I wish I would have visited!
Here is an interview with the halachic consultant:
Designing a Kosher Sukkah from Jewish Forward on Vimeo.
The competition generated such interest that it will be expanded next year to some 15 cities in North America.