I can't believe the piercing on the girl in that first link. It's on the lower edge of her pussy, basically on her perineum ("taint"). That seems like it would be uncomfortable at all times, not just during sex, when it seems like it could be downright dangerous - dangerous in a very stupid, "Jackass" kind of way...
Here's a great clip! For me, this clip is pretty much the perfect example for this thread. It's a bit low quality, but apart from that it has everything - ass in the air, good spread of the legs, panties to one side, a hint of roughness and of course a good view of her cunt. Clip 2... http://hosted.archivecash.com/analtitan/055/gall06.html