http://www.youtube.com/watch?v=3CR5y8qZf0Y See two quadricoptors play ping-pong without a table. The quadricoptors are autonomous (they are controlling themselves). This is really cool. Uploaded to YouTube by UntitledTitle http://www.youtube.com/watch?v=3CR5y8qZf0Y Retrieved Thursday 31st March 2011 11:26 am EDT