Here are the games I own and how I feel about the controls:
Zelda: Twilight Princess
Vanguardian has explained quite good how it works, so I will try to explain how I feel about it. First of all I have to say that I was in fear that the controls won't work and I considered getting this game for the gamecube that I can use the old control scheme. but now that I have played it I feel truly satisfied. For me, it felt almost the same as with a controller, just with slight improvements. I got used to it very fast and it felt great. and please believe me that this is not fanboy stuff but my true opinion.
Excite Truck:
You control this game by holding the wiimote horizontally and move it as you would move a steering wheel. the game plays like burnout, it is very arcade but the controls are great, i am just not sure if it would work with every racing game.
Wario Ware: Smooth Moves and Rayman: Raving Rabbits
These games offer a new kind of gameplay and are designed for the wiimote, so the controls are very good and make fun. if you want to know more about those games you can ask me, but i don't think that you are interested in that sort of gameplay.
the important thing for me is zelda. this game showed me that classic gameplay works very well with the wii.