I've got this on both the PS2 and the Wii editions and I personally find the Wii edition (which is the only one I can actually use anymore) really flippin' hard to control. My kids all reckon its because I'm old but I'm not having it.
The thing I find most unusual is that my hands are acting as my eyes -- in that if I react to something on screen with a jolt, my field of vision will be all over the show. It takes a lot of getting used to.
Still love the game, though.