I'vedone some CSS transformations, not in real websites but part of some contests I've entered. They are SOOOOOOOOOOOO MUCH FUN.
It's really amazing how much more you can do with transformations, and I'm glad IE10 is finally making the adaption to support them. I won't be adding them onto real sites though until IE10 gets more of a user base.
I might have it withs ome degredation though...who knows.