I stumbled upon this jQuery HTML5 Uploader last night and was quite impressed from the demo. The ability to drag and drop files right into the browser for upload to the server seems like a dream come true, especially given how easy the Uploader looks to configure. After fiddling with it for a little bit last night it's not quite as easy as the two lines of code they'd have you believe - as you need to write callbacks for all the events to give insight to the actual user. It's also (apparently) not compatible with anything except Chrome and Firefox but, regardless, nice proof of concept and potentially quite useful down the line.