As part of Global Hackday, Adam Crymble and I have been working on a tangible interface using the Trackmate system. Using Trackmate, you can make a system whereby physical objects can be tagged. As they are placed and moved on a surface, those objects can then cause different things to happen.
Our idea was to use this as an interface to information about members of the NiCHE knowledge cluster. Objects would represent a variety of categories and areas of expertise for the NiCHE members. You select the topics you're interested in, place those objects surface for the interface, and the best matches are displayed on the screen. You can instantly see who best to collaborate with on a given set of topics, or see who is working on those fields.
Check out the NiCHE website for more info. We were working on a video about it -- I'll post that when it's ready.