Wii Motion Plus

Wii motion plus, the highly anticipated addition that was announced at Nintendo’s E3 2008 and featured in their 2009 E3 conference. What Wii motion plus offers is a more 1 to 1 control over what you are doing with the Wiimote, what this means is all the games that have had huge draw backs to the fact the controller has issues being picked up by its very own sensor sometimes, this improves that connection capability. You can currently get Wii Motion plus with EA’s Tiger Woods PGA Tour 10, Grand Slam Tennis, and you can also purchase it seperately.

Source:
http://complexgamer.com/wii-motion-plus