From: http://obsiv.spaces.live.com/Blog/cns!948789BF56FAF394!177.entry

I (like many others) am a proud owner of a Wii60. Us Wii60 owners feel that we've got gaming all covered. Our Xbox 360 gives us top-class hard core online gaming in high definition. Our Wii gives us really unique gaming experiences because the Wiimote is like nothing else. But, what if we could get the best of the Xbox 360 and the best of the Wii, together, in a single game? I was curious, and the end result is my creation that I call Xbox 360 Input Machine (or, "XIM" for short).

Video: Playing Halo 2 (Xbox 360) with a Wiimote

that's pretty nifty if not a rather convoluted setup

XNA will support the Wiimote as well.

not officially, go read those stories again, that guy does not work for microsoft, it just spread around the net fast. using a wiimote on pc is nothing new.