The tiny Black Hornet is a microcopter UAV designed by Prox Dynamics, a Norwegian company. This microcopter is deployed by hand and controlled with a joystick, while viewing the action on a tablet. The Black Hornet can fly for up to 25 minutes and is almost completely silent.
Black Hornet is currently being deployed with the British troops in Afghanistan where it is said to make a big difference. It streams live video and can capture snapshots. Weighing only 16 grams this seems like a great addition to a troops arsenal without adding much extra weight.
Click through for a video from a couple of years ago of an earlier test model.