The page and the experiments with the Wii-Remote controll are really great: http://www.cs.cmu.edu/~johnny/projects/wii/
And for the spare time a cool video - I watch it every monday morning to get into the new week with a smile:
[youtube]http://www.youtube.com/?v=HIicO-e0hic[/youtube]
The second one is also cool:
[youtube]http://www.youtube.com/watch?v=6VKE_VoXzNI[/youtube]