@seer:
It's not a holographic display, inside the globe is a PCB with a vertical row of LEDs that spins very fast while the LEDs are toggling in a synchronized pattern, so the persistence of vision in your eyes makes it look like there are pictures floating in the air. It looks pretty good, actually. Unfortunately, it's a bit pricey (I think the guys selling them said something about $2000 for the fancier, 8-colour model).
