Well it looks like Microsoft is jumping on the Wii bandwagon with their own version of the Wiimote. Microsoft confirmed that they're in development of a Xbox 360 motion sensitive controller similar to the Wii controller, with a code name of Newton. The 360mote will have a LED sensor bar (like the Wii), but will one up the Wii by having a built in microphone. Jesus Diaz from Gizmodo did a great mock up job, base on MTV's sketch.
No release date has been announced, but it's rumored for late '08.
[8bitjoystick via Gizmodo]
