Swiss architects Jacques Herzog and Pierre de Meuron have designed the Munich’s football arena. The entire arena is surrounded by a smooth outer skin of inflatable ETFE cushions which can be illuminated differently depending on what team is playing at home. White/blue or red/white diamonds will move over the walls as if it is a giant LED screen.

The roof over the diamond-shaped shell will also be translucent, as if detached from the stadium walls.

Via The Mobile Technology Weblog and archinect 1 and 2.
Pictures 1, 2, 3 and the most impressive (all via archinect).
Also by the Swiss duo: the Amoeba library.
Related: Volcano stadium.