Well, with me, when I was going through the menus in WiiSports, the pointer always seemed to be a little to the right of where I knew I was actually pointing, but that might have just been poor calibration by the person before me.
However, I'm still in the group that believes any lag is a no-no. You didn't experience this type of lag using a standard controller, and I don't feel that should be compromised just so we could have a pointer function. From what I've read of the PS3, its controller doesn't have these problems. The Wii has proven that the controller CAN function without any of these glitches and deliver a very solid expeirence, but I think that might all depend on how much time a game developer spends on perfecting the controls. And if there are Nintendo games exhibiting these kinks, you better believe 3rd party games will be a whole lot worse.
As for non-gamers, I don't think I know what the appeal is anymore. I don't see any of my family wanting to play this, and my family has shown that they do like certain games depending on how pick up and play they are. For example, there isn't a single member of my family, grandparents included, that doesn't try to sneak in time with DDR or Karaoke Revolution when they think i'm not looking. But with those games, you either step on the pad or sing into a mic, and there's instantaneous results--it's all very self-explanatory. With the wiimote, there is a learning curve. Because of its uncomfortable shape and poor button placement and weird nunchuck attachment, not to mention all the little kinks some of the games have, as a non-gamer you're not going to be able to just look at it and KNOW what to do. And that alone is enough to keep a lot of non-gamers away.
Whether Nintendo admits it or not, there's just as much of a learning curve with the wiimote as there is with any other controller out there. This isn't a problem to me, or anyone else on this site I think, because we're all gamers. We have the patience for it. But I honestly see a lot of non-gamers who never got into videogames because of the confusing controllers STILL not getting into the Wii because the wiimote is just as confusing in its own way. And I think that has just a little to do with the fact that Nintendo didn't spend enough time or money developing the controller. Or maybe technology isn't at a point where such a responsive wiimote is possible. Either way, I'm still a Wii-fan, but i'm one that thinks Nintendo just got a few things wrong with this controller. It's not the perfect experience some people want it to be, and in some ways it should be.