Well, it was going to happen I suppose. A driver of some sort has been written to allow a wiimote to be used on pc's. Works by mapping keys to the movements of the wiimote, (I maybe wrong, but thats how I understood it). You need a bluetooth dongle for connectivity between the pc and wiimote.
Here is a video of someone playing half life 2 with the wiimote:
http://www.youtube.com/watch?v=asY_I8y6C0M
And here are pages for the driver/software download:
http://wii.qj.net/Wiimote-your-PC-wi...g/49/aid/74925
http://carl.kenner.googlepages.com/glovepie_download
I've read some people on other forums testing this and reporting it as working. Seems not to be a hoax.