Nike+ SportBand (Silver)
For the most part, I'm thrilled with my Nike+.  It's done wonders to motivate me to run and walk more--and longer distances, and better times.  It encourages a little friendly competition, and it provides a great way to track your mileage and see how your running (or walking) improves over time.      The only thing that disappoints me with it is that it's a little inconsistent.  Despite having calibrated it, it's not very consistent for me (sometimes the same run on two different days will differ by as much