This is an extremely cool video of a beautifully designed interface that connects physical objects and digital objects in a new way. You can drag things off of your computer, right onto your table, and then from there connect them to physical objects, like a book, which can then be moved around causing the digital objects they are linked with to also move. You have to see it to understand. Watch the video. Love it.
Social tagging: Collaboration Tools > Knowledge Management > Productivity > Virtual Reality