The Realities of 3D Printing

What are The Realities of 3D Printing? It has plenty of hype surrounding it, but is it realistic? Even viable?

To find out we looked to the next generation and a panel of experts.
Maged Guerguis, project lead for Skidmore, Owings & Merrill
Behrok Khosnevis, founder of Contour Crafting
James Wolff, CEO of D-Shape Enterprises
a panel of mechanical engineering students from Northwestern University.