Sphero comes with several pre built applications like golf, but also comes with a simple API so you can build your own applications.
The round robot also has built in LEDs so that you can program different colors and it comes with an induction charger.
Sphero’s large built in antennae allows a Bluetooth connection of up to 60 – 75 feet.
Spehro will be available in late 2011 for $129.99 and you can pre-order now.
This looks like it would be fun for a while doing things like teasing your pets.