The Raspberry Pi is a $35, credit card sized computer that was created so that kids could learn programming. One of the coolest things about the Pi is that it has a set of general purpose input/output pins (GPIO) that allow you to communicate with items outside of the computer. This allows hackers to build some pretty cool projects.
Here are ten that I am watching closely:
David Hunt is a professional photographer who has embedded a Pi into a Canon battery grip.
This opens up all sorts of cool functionality including wireless tethering, image backup, remote control, time lapse shooting, and on-the-fly image conversions.