Cool drag-and-drop batch file uploader

I stumbled upon a really cool batch file uploader a couple of days ago. It is a

"File Upload widget with multiple file selection, drag&drop support, progress bars, validation and preview images, audio and video for jQuery.Supports cross-domain, chunked and resumable file uploads and client-side image resizing.Works with any server-side platform (PHP, Python, Ruby on Rails, Java, Node.js, Go etc.) that supports standard HTML form file uploads."

Here's the link