Nike+ FuelBand ($149)
Some fitness trackers look like little more than rubber wristbands, but the Nike+ FuelBand looks like, well, a gadget. It sports a cool LED display that shows your daily data -- calories, steps and time, for instance -- and its built-in pedometer tracks all that stuff. You can sync it wirelessly with your iPhone or plug it into your PC to chart your progress, set goals and to collect motivation-building achievements. However, unlike other fitness bands, this one doesn't monitor your sleep or eating habits.