I'll be honest and say, despite giving it a pretty extensive session yesterday, I'm a bit disappointed.
To sum up quickly, it's the fact that motion gaming is largely about fun, and precision and fun don't seem to go that well together. On top of that, precision with no real 'feedback' relies on visual feedback, which seems lacking in things like TW11, which felt clumsy in it's use of the Move, and the precision seemed compromised as you could do some pretty imprecise things that where not detected. Sports champions table tennis is actually another example where the precision doesn't translate to the game that well, it's actually quite imprecise in your bat positioning, and only the spin etc are affected by the precision, the is a contrived/non 1:1 thing going on with your actual bat to table position that kills it for me.
On a positive note, Tumble is a great use of Move, it shows the tech of better then anything else, and Some parts of sports champions are brilliant, with the perfect amount of visual feedback to 1:1 move control that work well..
My young kids enjoyed 'The Shoot' better then all the other casual games, but this is too narrow in game play compared to Wii Play for example, which also has precise shooting elements that work equally as well.
If I didn't have a Wii, I'd be more impressed with it, but since I do have a Wii, I think it's clear that for most 'waggle' control the Wii does it better at the moment, namely because it captures the fun aspect of waggle control, and the games have had more time to polish the waggle interface.
I'm in for the long haul though, My only interest is Head tracking in GT5 (I guess not technically 'move' though), and I think small augmentation to mainstream games may be where it fits in better for me..