Am I the last person to hear about All Too Flat -- the geeky humor site? I heard about their Rubik's Cube stunt via Travelers Diagram.
They transformed the Tony Rosenthal sculpture at Astor Place into a Rubik's Cube, via safe materials that wouldn't harm it. Plus, they provide cute pictures of themselves as they do it. I'm reminded a bit of the nephews -- the sons of James's brother.
I think my favorite member is Kenny B -- check out the blog. They also provide a page of Geeks Gone Wild at Mardi Gras.