Razer and Sixense are developing a motion sensing controller for PC gaming. From the information revealed in the press release one can imagine that the handling of the yet unnamed motion controller will be similar to the Wiimote. According to Robert "Razerguy” Krakoff, boss of Razer, the new device will be based on a magnetic field motion sensor and offers perfect precision. The technology is said to be so accurate that it recognizes position changes of only a millimeter or a single degree angle.
At the CES there will be a live presentation with Left 4 Dead 2 since Valve is one of the partners Razer has already found in the gaming industry.
Here's a video demonstration of the technology from NVISION 2008: