Microsoft Robotics Studio
Wow, I did not even know that this existed. Microsoft has released a 1.0 of the Microsoft Robotics Studio. It looks like they can connect up and program against a variety of these small robotic toys. Hmm, wonder what I will be getting my kids for Christmas(or is that me)..................
Robotics Studio Download: http://www.microsoft.com/downloads/details.aspx?FamilyId=3D706147-82E2-4B4A-AF12-DB7D3F8ACD8A&displaylang=en
General Info: http://msdn.microsoft.com/robotics/default.aspx
I noticed that Lego is one of their partners. This is a link to some Lego products on Amazon: http://www.amazon.com/s/ref=nb_ss_gw/002-1312926-9868823?url=search-alias%3Daps&field-keywords=lego+nxt&Go.x=0&Go.y=0&Go=Go