SeisMac turns your Macbook into an earthquake/nuke detecting machine. Using the internal sudden motion sensor built into your Macbook, the software produces a three-axis graph of your laptops movement. SeisMac can also be used with Powerbook and IBook models that have a sudden motion sensor built in. SeisMac is freeware and available for Mac OS X 10.4 or later. Now we can detect any secret underground nuclear tests going on around town. via Gizmodo
http://www.suitable.com/tools/seismac.html
http://www.suitable.com/tools/seismac.html