LucasArts has revealed that Star Wars: The Force Unleashed is coming to Wii next spring and it'll allow you to wield the Wii Remote as a Lightsaber while using the Nunchuk controller to torment others with Force powers.
The Wii version, in development by Krome Studios, will feature an exclusive duel mode in which players can compete head-to-head with their friends. Whether this is online remains to be seen, but CVG doubts it.