Drag elements outside and inside the browser window.
This is just an idea that I had that I wanted to try. It works OK-ish in Webkit browsers (especially in Chrome Canary). It’s definitely not meant to be used in production. The code is not even meant to be used at all ;-). But, if you get inspired by this concept and want to build something with it, please contact me. I would love to see the result of it. Or even better, if there is something out there that does this already, let me know.
See it in action here: http://suprb.com/apps/windom/
(best viewed in Chrome Canary as said above).