I'm just now discovering the Nike FuelBand. I know it's been out for awhile and and two of my colleagues wear one, but my first impression was it was a gimmicky gadget to make couch potatoes feel better about themselves. I realize now that the second generation is out that this is a great example of pervasive computing and the platform has real potential as it continues to evolve.
Then, I came across a discussion with three Wharton Marketing professors. You can read the text of their comments, or watch a video version by clicking the link:
There are some great insights here such as the distinction between product and customer-focused marketing, the emotional appeal of the product, and the connection to social media.