Well, as I've been reading around, game manuals and such..
It seems the nunchuck has some sensoring to its own!
Though I'm not sure how... Since.. It kinda has no glassy thing where a laser or something can shoot out (not too sure how motion sensor works).
But I'm wondering, how does the nunchuck become sensed? I just thought it was there for the analog stick, C Stick, and Z button (may be worng on that one, but I know it's another button).