The ones that are most talked about would be France and Norway. Norway has had the system in the longest, and they had quite a, I would say, draconian system in that they insisted that companies achieve 40% female representation on their boards by 2008, and if they didn't, they would be delisted. There was lots of backlash, as you can imagine. The country now has 40% female representation on boards. A couple of companies chose to delist and re-listed, and the dust has settled.
France has a similar situation with a 40% requirement.