In 2002, Ned Kahn worked with the staff of Technorama, the major science center in Switzerland, and their architects, Durig and Rami, to create a facade for the building which is composed of thousands of aluminum panels that move in the air currents and reveal the complex patterns of turbulence in the wind.
http://www.youtube.com/watch?v=OWIhkvgg6MQ&feature=player_embedded
Jean Nouvel created a spectacular facade, based upon electronically controlled camera iris shaped devices in the style of decorative Arab screens, for the IMA in Paris, 20 years ago. For some reason, mechanical facades have recently started cropping up here and there in architecture. Here are some of our favorites.
http://www.oobject.com/category/12-moving-building-facades-videos/