Simply put, quadcopters are awesome. They are incredibly stable, fast, and are super fun (if difficult) to fly. A few of us around SparkFun have recently gotten into quadcopters and the following videos circulated around the office email. It's kinda cool here at SparkFun because it's not just the engineers who are into "techy" stuff - everyone seems to enjoy a little bit o' the geek.
This project from Daniel Mellinger, Nathan Michael, and Vijay Kumar from the GRASP (General Robotics, Automation, Sensing, and Perception) Lab at the University of Pennsylvania is an awesome example of why quadcopters are taking off (ha!). Check out the awesome maneuvers this thing can do!
Did I mention yet that this thing is autonomous? Though I'm pretty sure if any human attempted to fly through hoops like that thing does, it would not end well. Props to all the folks from the GRASP Lab - outstanding work!