First, from Improv Everywhere, a great performance art group; this one more subtle than some other of their work, but nonetheless, a real gem.
http://improveverywhere.com/2009/03/18/subway-art-gallery-opening/ or, http://snipurl.com/e59ka Next, a YouTube link to LED-augmented, extreme sheep herding by the Baaaa-stards. http://www.youtube.com/watch?v=D2FX9rviEhw or, http://snipurl.com/e59os Last is a link to some very cool green roofs around the world at Eco Salon. http://www.ecosalon.com/high-tech-green-roof-technology-in-architecture/ or, http://snipurl.com/e59w4 Enjoy.