Johnny Lee from Procrastineering (who we interviewed about 3 years ago) made a great DIY Video Chat Robot project. He is using a Roomba as the movable robotic platform and a netbook as the video conferencing system. Skype is used to do the actual telepresence. We did an article about the Anybot Telepresence Robot recently which is the same idea in a more polished package but essentially provides the same end result. If you are interested in making the Johnny Lee version of the robot you are in luck sine Johnny has provided all the documentation and code you need to get going.
Via: Ubergizmo
“There are two major components to the project: the iRobot Create which costs around $250 (incl. battery, charger, and USB serial cable) and the netbook which I got for around $250 as well. At $500, this is a pretty good deal considering many commerical ones go for several thousand dollars. The software was written in C# with Visual Studio Express 2010.”