Kunsthaus (Graz, Austria)
Stop laughing Kunsthaus is German for Arthouse (what we'd call an art gallery). This building is an interesting structure -- an alien UFO-esque form by day...
But by night an array of common circular fluros as you might find behind a light fitting turns the skin of the building into a monochrome canvas...
Agbar Tower (Barcelona, Spain)
Excuse the horrid musica as we countdown to NYE 2007 with the help of the LED array on the rather phallic Agbar Tower...
Uniqa Tower (Vienna, Austria)
Again a mesh of LEDs gives the Uniqa Tower in Vienna a light show...
Dexia Tower (Brussels, Belgium)
Less art and more text...
Any others of merit?