The controller is exclusive to Best Buy and arrives this spring.
Every major gaming system currently on the market has some form of motion or gesture control, as do LG TVs and even a set-top box or two, and thanks to Leap, so does the home computer.
The Leap controller is a small device sits under your monitor or TV motion control to your PC or Mac. Like Microsoft's Kinect, control is done with your hands, rather than with a held device. It's not exactly optimal for those sitting at desks, but it might be just the thing for HTPC users who find other devices for controlling their computers lacking.
The Leap is $70 and will be a Best Buy exclusive.