Whhoooooo00000000aa!!!!?!?
I really, really REALLY liked that music. It's not the normal hyper sort of stuff I like to listen to, but damn funky nonetheless. Who ever thought that a simple repetitive little nail robot could be so cool? I think you did a great job with this animation, it was entertaining, but only with the music on, hehe.
However, since you've done most of it with pretty basic 2D tweens, you could probably have worked to make the visuals just a little bit prettier.
But I liked it, it's got a certain sense of cool.