I've been looking at these cool displays of interactive computer controlled lighting that were installed in tower blocks in Berlin and Paris recently for art festivals. Dialling in to them with a mobile phone lets you take control of the display or play Tetris or Pong, using the building as a huge screen. [quicktime video 3.2Mb]

Talking about tall buildings, this article raises some interesting questions regarding September 11, and references this BBC report that the US was already planning an invasion, as well as this story about the need for an oil pipeline across Afghanistan.