3D Printing: Shapeways
Shapeways is a "printing" service which will take your 3D model, and turn it into plastic. Awesome.
It takes a little while for the approval process on signing up (about two weeks for me), prices are variable on which material you use as well as how much of it you use. Your creations can be uploaded via .stl, .dae, .x3d and .x3db (don’t forget their guidelines!) or you can use their creator (make sure Java is installed) to modify some existing designs.
If you’re interested in following the news on 3D Printing and digital fabrication, you might consider reading our blog at Fabbaloo or http://fabbaloo.com