I recently came across Leap Motion and I am getting one!
Technology has moved on in great strides in the last few years and user interface devices are more and more amazing and immersive. This morning, for example, I was playing Star Wars Kinect on the X-box with my boys and you really feel like you are a Jedi fighting real villains, and I have always dreamed of being a Jedi since I was a little boy. Now my children can really play at being Jedi knights in very realistic ways! When they kick, their Jedi avatar kicks their opponent and it all feels and looks so cool.
But as cool and innovative as the Kinect is, I think Leap Motion promises to give an interesting extra dimension to user interfaces. Just check the video and see what I mean. I can see technologies like this leading to stuff like miniature robotic tools inserted in patients and a surgeon controlling the operation by waving their hands and fingers over a Leap Motion kit, or if you need to learn sign language there will be software that gives you feedback when you get things right, or even better that could decode people who use sign language to communicate and write/say what they are signing. Enjoy the video and please leave feedback and share.