Mercury Editor :
So going through the Symfony CMF post on Liip Blog I came accross a nice editor Mercury. Mercury is a full featured HTML5 editor like Aloha Editor .
You can download or see it in action over : http://jejacks0n.github.com/mercury/
I am impressed on the first look, awesome :) .

Fluid Baseline :
Another project I was impressed is the Fluid Baseline grid . It may be good that you go and look in browser with different sizes. Some properties are Fluid Columns, Baseline Grid, Responsive Design. Go and see dude :) . Impressive .