I interviewed Frank Bick with Bick Group a few months ago for about his office in St. Louis. It's LEED Gold Certified and a wonderful example of how users can be engaged in the process of making their space green. The building has sensors that measure temperature, humidity, air quality and light levels at the work surface. Lights are automatically dimmed when the light outside increases. But that's not the cool part! What's really unique here is they created software with "pop ups" that appear on every employee's desktop that say when you might want to close the windows because it's too humid outside or the air quality is too low (they have operable windows). Also, the HVAC system automatically shuts down at 6pm. The software allows users to click on a floor plan (in their section of the building) using the same software and the HVAC automatically stays on for another 2 hours. I think they now sell this software to other companies, leveraging what they learned.