At first glance it's a little difficult to understand the necessity of another motion-sensing add-on. What could possibly be inside this particular block of white plastic that's not inside those other countless slabs of white plastic that Nintendo has already slathered on the Wii? Sure, we know in theory that the gyroscopes that MotionPlus provides allows the controller to truly orient itself in 3D space, instead of just sensing acceleration in various directions, and breaks some of that reliance on the sensor bar, but do those theoretical advances result in a true leap in gameplay? We tested it out with EA's new MotionPlus-enabled Tiger Woods PGA Tour 10 and Grand Slam Tennis -- the first such titles on the market while we wait for Nintendo to get its own Wii Sports Resort in order -- and we'd say the results are pretty inconclusive so far. Check out our full impressions after the break, along with enthralling videos of both games in action.