I went to MakerFaire NYC last Saturday to window shop for a 3D printer. Imagine this as a huge science fair, sponsored by Radio Shack ("learn to solder here!"). If you make some cool sort of robotic, electro-mechanical, or steampunky gizmo, you can show it off at MakerFaire...
To get a flavor for the event, start with this video of Random Vehicles (and their drivers) outdoors on the former Worlds Fair grounds. There was lots more to see inside the New York Hall of Science:
The antique iPad keyboard was great!
A couple of contrasting dreams of flight:
MakerBot TV made a nice video of the 3D fabrication village. And one last video link, because you don't want to miss the Coke Zero and Mentos show!