Blair MacIntyre of Georgia Tech has developed a powerful Augmented Reality demo that runs on an iPhone, and is demonstrating it at GDC. A live video can be seen inside.
Randall Hand
Randall Hand is a computer graphics programmer and news junky that's been working in the field for the last 15 years. He's responsible for visualizations generated on some of the most powerful supercomputers in the world, ytnef, mullion support in ParaView, and VizWorld.com.