^ Wow, that's a bummer. But the execution is so good, at least it's convincing... not precast with urea admixture.
Where did it start? First place I remember seeing it was in a suburban Panera Bread shop.
High design there... Seriously, though, I'm curious too - it's amazing how these things seem to travel by wind. I can't think of a particularly influential firm or project that would have started this. Maybe Kieran-Timberlake from 1995?