Neat video of quadrocopters from the Flying Machine Arena playing catch:
This video has details about the FMA:
Maybe the next addition to Jason's synchronized, dancing fish will be synchronized, dancing quadrocopters!
[Update] New Quadcopter Called Flying Circuit Board.
Popular Science (5/4, Boyle) reports on a new "hand-built quadcopter" by CrazyFlie that "is basically a flying printed circuit board and not much else." Even though the quadcopter is only four inches on a side, it "includes a 3-axis accelerometer, two gyroscopes, a charging port and a tiny model airplane battery that gives it four and a half minutes of flying time."