If you're looking for something to distract yourself from some real work, or to keep someone else busy, then the following by Nick Shvelidze could do the job. They've created a version of the "Robot finds kitten" game that runs on an Arduino and uses a PC for the display. Apparently this is a form of Zen simulation, however the jury is out on that claim. Nevertheless playing simply involves moving a robot around on the screen which is controlled by four buttons connnected to digital inputs on the Arduino, and the display is via a putty terminal emulator on the PC. This allows the Arduino can create the game display using serial text, for example:
Not the most productive use, however an interesting example of how an Arduino can create graphical displays on a PC using ASCII characters. For complete instructions and the required sketch, head over to Nick's github page. And for more, we're on twitter and Google+, so follow us for news and product updates as well.
If you're new to Arduino and want to join the fun, the first step is a solid board for your projects - our Freetronics Eleven - the Arduino-Uno compatible with low-profile USB socket, onboard prototyping space and easy to view LEDs: