Everyday, a huge amount of new gadgets are introduced around the world.
As described in Wikipedia, a gadget or gizmo is a device that has a useful specific purpose and function. Gadgets tend to be more unusual or cleverly designed than normal technology.
According to this definition, the gadgets proposed by both Wii and iPhone are important ones.
They provide a new perspective on how users can interact without taking the approach to the usual staff in the usual way.
They can be called innovative as both use some already available technology but within a new context and functionality. More important, they innovate in order to transform well know and usual (for us) day to day activities into new experiences.
Playing video games with a console and making calls can be considered for the developed world as normal activities that each family has already have some level of familiarity and from each, at least, one member can be considered an advanced user, with lots of experience using it.
OK, this may be true for the use of mobile phones, but remember that a high number of games consoles have been on use on developed countries from decades now.
Gesture and direct human interaction has been introduced in those two gadgets and this means that things will not be the same from now on. Both Nintendo and Apple provide two real innovations as they propose new ways of doing old things in a different way.