Gobot also has sister libs in Ruby and Node! I have used the Ruby one a bit and it's a ton of fun. I've had a bear of a time with the bluetooth support under Ubuntu though. I guess I need to try Gobot with my Sphero ASAP.

Ron Evans (One of the gobot devs from the blog post linked in beliu's post) was also named a Ruby Hero a few days ago. He was tremendously inspiring in this podcast on teaching kids to program [1]. I dug it so much I wound up demoing a sphero and a "talking fruit keyboard" at a local career day a few months after I heard him.

[1] http://rubyrogues.com/141-rr-teaching-kids-with-ron-evans