The first Wii experiences have been predominantly positive: the physical play style and basic sensory technology actually seem to work well. The remaining troubles have been either technical limitations or user errors. I will explain here one of my own from the latter category, so that others with same issue might get help quicker than I did.
Wii manual explains how to connect your controller (“Wiimote”) with the console by pressing the sync button simultaneously both in the remote and in the console. The trick is to press both buttons only once; somewhere I had got an idea that you need to keep those two buttons pressed down until the controller tells it has synced. That is wrong, and a bad idea. I ended up spending one or two hours pressing buttons for minutes without successful synchronization. The Wii console was of course inaccessible for all that time, which was not very happy situation — I was already calling help lines and was ready to send my brand new console back and order a new one.
Laura saved my day by pointing out that both two controllers sync perfectly if I just stop my futile attempts in keeping the sync buttons pressed down, and just press them once. Oh dear.
Another irritation is the lack of S video or component video cable from Wii (coming to Europe some time next year; out of stock in Japan). And I cannot get Dolby Surround sound out into my amplifier, even when both console and game (Zelda) advertise to support surround. But Wii Sports was really enjoyable, even sweaty. And Zelda Twilight Princess has the right kind of magic in it. It actually reminds me from both WoW, Fable and Beyond Good and Evil, which are among my favourites as far as contemporary RPG style adventures are concerned.