I still have to sign everyone else up, I've still only got Stark and Ghost.
Anyway, the only game I have so far is Need for Speed: Carbon. To be honest I wasn't expecting much, and it's not a perfect game (no damage modeling!?), but it is very fun, and I was really surprised that the port team actually took the time to make the game use the Wii's motion sensors. I was expecting to have to use the joystick, but ta-da, it's all based on the Wii motion system, which is very fun. You have a selection of different control schemes, such as the standard sideways-Wiimote like a wheel thing, or (my favorite), you can have the Wiimote be like an accelerator pedal (lower it to go faster, pull it back and you slow down), and the Nunchuk as your steering (by leaning it left and right).
The only problem I've found so far with the Wii's system (at least for driving games) is that you have to lean back to be uncomfortable (as the controller used to turn must have the bottom facing the TV, and the top facing you). If you try using the controller facing the floor, the Wii doesn't register the twisting motion as a turn. This might just be with NFS:C though.