OK, this is WAY cool!!! Yea, I know this type of thing has been done before but I thought I'd share this excellent story from my morning read of Slashdot with the readers of NeoWin, Enjoy!.. (Sorry the graphic is kinda big, 62k, but's it's worth the wait... Ed.!)
Celebrating its 20th anniversary, the Chaos Computer Club has made a special present to itself and the city of Berlin. Since Sept 12, 2001, the famous "Haus des Lehrers" (house of the teacher) has been enhanced to become world's biggest interactive computer display.
The upper eight floors of the house have been transformed in to a huge display by arranging 144 lamps behind each of the windows. A computer controls each of the lamps independently to produce a monochrome matrix of 18 times 8 pixels.
During the night, a constantly growing number of animations can be seen. But there is an interactive component as well: you can play the old arcade classic pong on the house using your mobile phone and you can place your own loveletters on the screen as well.
News source: Slashdot