Motion controlled sports video games

The Nintendo Wii is set to launch November 19th. I caught this video from Engadget of two people trying out Wii Sports (Bowling, Tennis, Baseball, Boxing, Golf). The people in the video are trying the games out for the first time, so its hard to gauge how effective the motion controlled gameplay will be on the Wii. This isn't the first time that companies, including Nintendo, have tried these types of sports games before. Even the original NES had the Power Glove and the Power Pad. A couple years ago, a company called Xavix launched a line of motion controlled products that was made up mostly of sports titles. I demoed their line of games at CES 2005 and it wasn't very good at all. Hopefully, the Wii will be an improvement upon past attempts.