Originally Posted by mayonaise

unfortunately, the kind of holograms you see in movies aren't possible - at least not with our understanding of physics. you need something to project the light onto, it can't just be beamed into space to form an image.

http://www.msnbc.msn.com/id/7864521/page/2/

when this loads, be sure to click the 'Stop' towards the top of the page, or it'll auto forward you...
http://forbes.com/technology/2005/05...&partner=msnbc