They are the Yves Saint Laurent criss-cross strap pumps:
However, I was resigned to admire them from afar until last night when I spotted the Parker Wedge on Alloy's website.
While they're missing the criss-cross strap (which is obviously a selling point for the YSL pumps), they do have that cool heel that attracted me to them. And they come in forest green! For only $32.90, I'd say it's a fair trade.