Japanese Camera Brand Gizmon released cool external lens for iPhone.

One is Wide&Macro Lens, and the other is FishEye Lens. Both of them uses magnetic attachment to set themselvs to the iPhone, so thats quite easy to use. :-)

They are enough kind to open English page, when I ask them to write this article. I think worth to pay, but anyway first what kind of pics you can take with it.