A brave student have just sent a few amazing Videos about some very interesting projects using Quadrocopter-Technology.
ETH Zurich, Institute of dynamic systems and control
Flying Machine Arena – Overview 2010
Quadrotor Ball Juggling
GRASP Lab, University of Pennsylvania
TARMAC Project in the Hybrid Systems Lab at UC Berkeley (EECS department)
Autonomous Flight and Obstacle Avoidance with Kinect Sensor