There are many many uses for the Wii remote. Here is a few videos of people who have made music with their Wii's.

http://vjkungfu.tv/archive/wii-to-midi-walkthrough-for-windows/

I came across a website that has some really cool projects that use the Wii Remote. You can make an interactive whiteboard, do 3D head tracking, and multipoint tracking. Projects and source code is available from here http://www.cs.cmu.edu/~johnny/projects/wii/
I think I'm inspired enough to go buy a remote and have a go!