In November 2003, Stelarc came to Glasgow to showcase his new Prosthetic Head project at the New Territories festival. I spoke with him about this project and even had a play with the Head itself. Just recently, he published a paper in CTHEORY on the project, which raises a number of questions related to artificial intelligence and posthuman art. The project itself was developed using AI and Stelarc seems to be a valuable exemplar for collaborative work in this area. Julie Clarke's essay on the project, also published in CTHEORY is also worth reading.
The last I heard, Stelarc's next project was to have an ear surgically attached to his forearm, but he was struggling to find a surgeon who would agree to the procedure.