At the D: All Things Digital conference Wednesday, Microsoft CEO Steve Ballmer will unveil Microsoft Surface, the first in a new category of surface computing products from Microsoft that will â€œbreak down traditional barriers between people and technologyâ€. A Surface computer is a computer that recognizes physical objects from a paintbrush to a cell phone and allows hands-on, direct control of content such as photos, music and maps. Surface turns an ordinary tabletop into a dynamic surface that provides interaction with all forms of digital content through natural gestures, touch and physical objects. More information here. You can also see a preview video below.