Holograms are just awesome. For years, Hollywood has captured the public imagination — from Star Wars to Iron Man — but ...

the Iron Man armor. The second coolest part, though, is the sweet holographic computer interface that Tony Stark uses to control it. No mouse, no keyboard, just hand gestures and voice controls.

Remember the scene in Iron Man 2 where Tony Stark rediscovers a new element and is handling virtual 3D holographic elements ...