I see where Ceric's logic is coming from, I've seen this kind of thing used in marketing before, but I don't really know how well it works. The theory is a high price convinces people they're buying a "better" product. The obvious counterexample that someone already brought up is PSP vs. DS. The counter-counter example is the iPod, maybe? The accessories are as expensive as heck.
I don't think comparisons to the GameCube era are that relevant anymore. Nintendo isn't fighting the same battle it did with the GameCube, and so far the new direction has been a huge success. Nintendo is making the rules, and as such I think Nintendo should go with a price that's quite different from the competition. I think there's also the possibility Nintendo is still thinking about bundles and how those would affect pricing. Judging by all that "Wii=we" and "ii=two people" nonsense, Nintendo wants to push the multiplayer aspect of the Wii, and that could mean selling two (or even more) controllers with the system. If the controllers are expensive, this type of bundle might make a lot of sense.
One thing I agree with Ceric on is the pricing of games. Someone at Nintendo, it was Yamauchi or Iwata, once said something like the cost of the console is like the price of admission, it's a barrier to playing the games. That's true, but looking at how the cost of video games compares to other types of media, it seems the games themselves may be a barrier. Seriously, I can't think of a single medium more expensive than videogames (unless you count computer software as a "medium" - I don't.) DVD box sets of TV shows are in the same range, but those are a new phenomenon, and they don't have to overcome the barrier of people who have never watched TV or used a DVD player (well, okay, my grandparents don't have a DVD player, but they probably wouldn't be convinced to spend $50 on a show they can see for free on TV anyway).
I think it would be smart for Nintendo to offer cheaper games this generation. I think it's going to happen, but in a more minor way than I hope: probably Nintendo will make a lot of cheaper non-gamer games. Wii Sports is a good example, I'll be surprised if Nintendo launches that at the same price as Twighlight Princess and Metroid Prime 3. Still, how much cheaper will it be, and will we ever see traditional games at a cheaper price? Without waiting for the Player's Choice versions?