Jamie Newman 03 December 2010 Great list! Variables and parent selectors are definitely my top requests. calc() looks like a much better version of the old IE expression() rule, which was really a way of shoehorning JS into CSS and required JS enabled on the browser. It was messy, but it’s usefulness was there for all to see, so it’s great to see this being revisited. I have yet to play around with LESS and SASS but it’s fantastic that they are innovating with stuff that will hopefully make it back into the CSS spec.