The BulletFlight application software, available through the iTunes store, turns the iPod touch into a full-blown ballistics computer that helps hunters in the field plot their firing solution. Users can tap in the ammunition type, wind speed and conditions, and distance to target. Profiles for three weapons come loaded with BulletFlight, although more can also be added.
Maybe Apple should look into this concept further. I mean, wouldn't it be nifty if we could own an iGun? :-P