I found the recent addition to the Autodesk Labs web-site pretty interesting. There’s a new download for an STL exporter for Revit. According to the web-site you can “Create 3D Prints of your Revit 2009 models. As architects and engineers start their digital designs earlier and keep them digital for longer, they want a way to still physically interact with their designs. With the economical availability of 3D printers this has become possible.”
This is interesting for two reasons. Firstly, the Architectural world is going nuts-out-crazy for 3D printing and other rapid prototyping technology that designers and engineers have been using for decades (in some cases). Also, its interesting that this comes out for Revit, when the Inventor STL output tools are a little sketchy. It doesn’t allow you to export individual parts from an assembly (each has to be created separately), and it only supports the heavyweight ASCII version of STL, rather than the more compact binary version.