Nice game, finished it in a few sessions. The controls are good, really takes advantage of the wii's motion sensors. The lightsabre was a bit of a let-down: you don't actually control the sabre with the wiimote, swingin the wiimote left will make your character do a preprogrammed swing to the left etc.
Now to the bad stuff: the gameplay was very straight-forward and quite repetitive. Walk throught the levels, kill everyone, every once in a while meet some kind of boss. Sith are not supposed to be terminators, a bit of sneaking around would have made a big difference.
Another problem was the way they deal with the character dying: you just respawn with full health and lose a couple of experience points. So if you kill a boss to 80% and die, you just get to keep going with full health against the last 20%. Not very motivating.
Despite the flaws, it's not a bad game and I would propably buy it again knowing what I now know.