Here's a robot video that I found interesting:
In this video, Andrew will introduce the ArbotiX Robocontroller
The ArbotiX Robocontroller is an Arduino Compatible Robotic microcontroller. It has 2 hardware serial ports, for simultaneous DYNAMIXEL/XBee Communication, as well as as 8 digital I/O and 8 analog input pins for adding sensors and outputs. Trossen Robotics uses the Arbotix for all of our DYNAMIXEL based robots.
You can control the Arbotix Commander in a variety of ways. Using the handheld ArbotiX Commander
you can control your Robocontroller via XBee communications. You can even create your own XBee based controller using the open source Commander Library
The ArbotiX is great for everything from simple robots to full featured research platforms. And with an ever growing community, you can get started in no time!