There may be an overload of Zelda right now, we're not used to having so much Zelda content available. When you think of all of the games on the Virtual Console and the eShop, plus Ocaraina 3D, and everything else going on with the 25th anniversary, there's A LOT of Zelda going on.
That being said, I think Skyward Sword will be the cherry on top, not only on Zelda's legacy over the past 2.5 decades, but also on the Wii console itself.
I wont go buy Natal until it's been proven to work as good as it seemed to at E3. So far Wii Motion Plus is pretty good. I got it with the new Tiger Woods, and I have to say it is pretty satisfying. Still looking into Natal though, anybody know when it comes out?