Reading (still pending) RSS feeds about Lego Mindstorms I've found something interesting... How to control your NXT robot with a pc and a Wiimote!
It uses Microsoft Robotics Studio and, more interesting, a managed .NET library for the Wiimote (which opens possibilities to not only controlling robots...).
Now that I have a Wii I have to play with this .NET library... For controlling the robot I still prefer doing so from my phone.