An organization called Play Me I'm Yours has put publicly available pianos all around NYC. And they even have maps of where the pianos are. awesome.
BP, the Gulf Oil Spill and Spatial Law
...Third, and perhaps most important, is the role spatial data will play in the litigation that will inevitably follow. Lawyers have been slow to introduce spatial technology in the court room. However, I predict that spatial data will play a critical role in Gulf oil spill litigation. One reason is simply that the nature of many of the claims and defenses will have a strong temporal-spatial component....
