If the folks at Carlos Marreiros architecture firm have their ways, the Macau Pavillion at the Shanghai World Expo 2010 will be in the form this glorious giant rabbit:
... the pavilion will be wrapped with a double-layer glass membrane and feature fluorescent screens on its outer walls. Balloons will serve as the head and tail of the ‘rabbit’, which can be moved up and down to attract visitors. The building will be constructed with recyclable materials and consists of solar power panels and rain collection systems.
I was thinking the same thing:
http://www.intriguing.com/mp/_pictures/grail/large/HolyGrail067.jpg