This project will be familiar to anyone who is a fan of Lost.
I've used Flash and a dash of php to create a countdown that needs to be reset every 108 minutes. (Google Lost countdown if you need more info on that).
I wanted to create a button that could be pressed to trigger the reset script located on my web host server.
I built the Execute button using a simple Radio Shack project box and a momentary switch.
Some time on the Arduino forums taught me that you can use the Processing language as a go between from the Arduino to the Internet.
After some tweaking, I now have a button that I can press to trigger a php script remotely and reset the clock on the server.
I realize this is only using a fraction of the power and potential of the Arduino, but it is a start for me and I was pretty excited when it worked.