http://uk.wii.ign.com/dor/articles/895294/wii-motion-plus-and-livemove-2/videos/LiveMove2_demo_video_073008.aspx 
 Excellent,, just excellent..

Im seeing:


FPS

Better, more precise aiming.

Implement 1:1 accurate hand/ gun animations to match what the player is doing, which alone would be something totally new visually.

Ability to combo shooting and gun-whipping: IE get close, shoot an AI/player in the leg and as he/she limps down make an fast upward strike to the face or even just a not-so aggressive slap motion across the face to humiliate.. lol



Sword Action / Ninja game

No need for developers to included an overly complicated combat system of button presses, It can now be based on your own 1:1 skill:

Realtime sword fighting and shuriken throwing

Make-up what ever combos you wish, randomly.

You have control over killing an opponent or just injuring them IE Chopping of their head or just their hand.

Realtime blocking with you sword, cool Devs could even make it possible for you to hit incoming shuriken/projectiles back at an enemy.. f**king cool.


Tennis

Realtime and accurate spin and aiming. (could make for a truly deep tennis experience)

A few obvious examples but ultimately its upto developers to work their magic..