That is completely awesome. I think there's a robot sporting league in their future. I might actually watch tennis if it was played by quadrocopters. I think watching them play racquetball would be fun too.
Nice! I love when it drops the ball it freaks out and chases it... "I got it! I got it! I... aw crap."
Shiny hover-Aibo coming so people can play catch with a dog without all that "caring for a living creature" bit?
I want the version with four robot arms and a giant laser. A fleet of 250, please.