Today - my last complete day living in London before I move - was yet another lovely day and I popped out to grab the latest issue of Wallpaper* from the WHSmith and walked past the ABN AMRO building on Bishopsgate, it presented itself as a simultaneously semi-transparent and semi-relfective surface, although as I was on the other side of the road and I didn't zoom (this is a section of a larger image) my reflection is only a few smudged pixels (bottom middle of second pane down on left).