Ok so I got some hands on time with the Wii and the Wiimote when my brother-in-law brought it over yesterday. It more than confirms the fact that people who injure themselves, others, or damage anything else with the Wiimote should be removed from the gene pool.
Warning for Nintendo fan boys: Harsh opinion below...
It really is slight gestures, in fact it is too sensitive, I had a hard time playing because I overdid every movement. Though it is probably especially hard for me because with older consoles I made myself learn not to move the controller at all, 100% finger action. It feels very unnatural because its all done in relation to the TV screen, not the controller itself. So if you move just 1 inch past the screen's edge then you are stuck in that direction or nothing will happen. Example: in Red Steel (a FPS) if you go to far to the left then your view will be stuck turning left or sometimes your view will just stop completly the milisecond you gone off the "side".
Granted I only got to play 2 games: Red Steel and Excite Truck (you hold both ends of the Wiimote in that one, its like holding a steering wheel a 11 and 1 o'clock
) because of limited time and other than Wii sports those were the only MP games. Heard neither were very good or made great use of the Wiimote but thats what he had. My bro-in-law did say that Twilight Princess felt smooth as silk and didn't have any problems (obviously can't confirm, but he had more trouble with Red Steel than me). Oh and that little speaker the Wiimote has in it sounds like those speakers at a drive through (read: amazingly bad), it completely ruins immersion. Despite its jerkiness/crappyness, Red Steel was fun (didn't have time for SP but split screen MP was fun even though it was only 1 vs 1) but everytime you picked up a weapon it played this really low quality "pick up" sound which was in massive contrast to the excellent sounds it had and was just another annoyance.
If I ever decided to get a Wii then I would definatly get the controller for it (the Game Cube controller only works with older games), I would probably try to buy one without it if possible. One thing that surprised me was its size, its like a 3 inch thick piece of paper! Although I gladly would have taken horsepower over size, the graphics are unimpressive and probably aren't going to get much better (I know gameplay > graphics but come on, its like a overclocked Game Cube, Nintendo could have at least made the specs half way between PS3's and 360's instead of just above the Game Cube's).
Imo (as this entire post has been) I wouldn't spend over $200 to get a Wii (might be that price next year, hopefully Super Smash Bros.: Brawl will be out). Not to bad considering I'm not even thinking about getting a Xbox 360 (cause of its overheating/other problems and the fact that M$ dropped backwards compatibility) or a PS3 (blueray is not the future and for $600 I could do something much more worth while of my free time... like getting a cheap gun and plenty of bullets).
Edit: Amazing coincidence that this is my 666th post
.