Designed to be LEED certified, which it still has not yet officially achieved (ahem), the Comcast Center has a lot of green features.
Probably the most famous of which would be its waterless urinals. (Remember that absurd controversy?) Anyway, they save 1.2 million gallons of water each year at the Comcast Center.
Disappointingly Table 31, located inside the Comcast Center, does not have them. Apparently LEED certification for the restaurant was cost-prohibitive.
But The Market at Comcast Center has them. Ground floor of the building, down the steps from the lobby through what looks like a service door. Waterless urinals to use to your heart's content. Enjoy.
Video of Comcast Center Waterless Urinals on Flickr [ Flickr user sameold2008 ]