Traffic Stop: Blinking traffic light that changes signal based on CPU use

imagitronics.org — "This project was born out of the frustration after being constanty interrupted by people who could not tell that I was already busy. The alpha version of the software detects the number of running applications on the computer using Cocoa?s NSDistributedNotificationCenter and updates the light based on a user-defined threshold." Jun 28, 2007 View in Crawl 4