Star Wars put the idea of a 3-D, holographic video into the minds of an entire generation - remember, Princess Leia pleading, "Help me Obi-Wan Kenobi, you're my only hope." We've come a long way in acheiving that technology. Scientists from the University of Arizona recently developed "rewritable" holograms. These 3-D images are viewed without the help of eyewear and are, at the time being, only static images. The awesome part is that this technology is a digital display - not the cover of a National Geographic magazine. Coming to a electronic device near you.