Stefano has completed work on a holiday project known as the DIY Santa Claus Singer with Flyport. It is built around an animated Santa Claus decoration with the control switch bypassed with an NPN transistor. The switch is controlled over the internet via the Arduino/ethernet shield combo which responds to Twitter messages.
Part one of his article containing mainly the project announcement can be found here.
The second part of the project description containing more details as well as the code can be found here.