PS3 Cabela's Top Shot FearMaster Peripheral Firearm Controller

The latest is Activision's Top Shot Fearmaster, a rifle-shaped controller, but it's made even better with a dash of science. The Fearmaster makes it more natural to target things than a regular controller would - it can also measure your heart rate and hand tremors to improve (or worsen) your accuracy. For example, if your heart starts beating too fast, the screen may blur a bit until you calm down. The Fearmaster measures your heart rate from a pair of metal sensors on the gun - one on the handle and the other on the barrel. It can also tell how much your hands are shaking via a camera sensor up front.