Green Office Lens
There's not a whole lot up there right now, but as I do my own research on greening the workplace I'm going to be continually adding stuff to it. So be sure to check back regularly. (Plus the more you visit, the higher it gets ranked, and I think the higher ranking it gets the lensmaster gets some cash - which I've told them to donate to EcoTrust.)
And if you've got any green office stories or tips - please share them!