I am going to buy the "OWI-007PC Robotic Arm Kit + IBM PC Interface" from OWIROBOTS.com. It is a cool robotic arm which can be assembled and later controlled by remote control. This arm can also connect to the computer and re-programmed as they calim :
It's usefulness as an education tool can be extended to explore other robotic technologies like speech recognition, speech control, automation and animatronics using our OWI-007 Robotic Arm Trainer accessories.
There is also another version called OWI-535 that looks even better ;-)
P.S. : Well we bought the robot arms and we had a party for junior robotic students at university of Oslo, institute for informatics :-) Here are the pictures : http://robotica.ifi.uio.no/wp/?p=207