The fitness geek in your life -- or the guy who could stand to lose a few --will love the Fitbit Force. This wristband delivers all kinds of data to his wrist, from steps taken and distance traveled to stairs climbed and calories burned. The Force can also track his sleep and wake him up via a vibrating alarm (without waking you). It tells the time, too. Overall, this device will give your guy loads of data to help him be more active and healthy.