Bre Pettis out of NYC Resistor and co-founder of MakerBot gave a 40+ minute talk at the 2009 Gnomedex not only explaining the MakerBot 3D printer, but his thoughts on collaboration, open source design, distributed manufacturing and possibilities that lay ahead for personal fabrication.
There is a video featured during Bre's talk that can be found here in a better more audible quality. Readers will be happy to know that there is now a new version of the MakerBot, called the Replicator which includes a larger print area and additional features. A video featuring the Replicator can be found below.