Just want to share with you guys a project I am working on at NBBJ.  It is a conceptual design tool and is in the early stages of exploration in upcoming projects.  See link to video (with sound)

Architecture: Realtime Physics for Space Planning
http://vimeo.com/15563685

"This is a preview of a parametric conceptual design tool for architectural practice that I have been developing at NBBJ. I wanted to develop a
system that allows designers to quickly organize and understand complex
architectural programmes in three dimensions.

It is an advancement of the traditional bubble diagram; it solves
adjacency requirements automatically and suggests planimetric and
sectional relationships. The resulting diagrams are not formal
solutions; they are simply organizational diagrams with solved
adjacencies and accurate required areas. The diagrams are raw
materials, meant to be manipulated sculpturally, or even squeezed into a
formal container.


Technical Information
The tool was created in the Grasshopper plug-in for Rhino. Custom components, written in VB.NET,
read programme data directly from Excel into Grasshopper. The tool
uses the Kangaroo engine for realtime spring dynamics simulation."