Mocha UI - A Canvas User Interface Framework
But this week I found one more reason to like it : mochaui.com by Greg Houston.
It's not new, but I did not try it before, now I did and I think it's a great script to build some cool interfaces.
It runs on all major browser and the homepage is clear providing demo, documentation, support and a nice script builder.
I am sure I will use it and first thing that comes to my mind (apart from work) is the dashboard of my blog.