Cloak of Invisibility.

Well not yet - but we are hearing more from at least one scientist!

see http://www.abc.net.au/news/newsitems/200704/s1891596.htm

"Physicists figured out the complex mathematical equations for making objects invisible by bending light around them last year.

Now a group of engineers at Purdue University in Indiana have used those calculations to design a relatively simple device that ought to be able to - one day soon - make objects as big as an aeroplane simply disappear.

The design calls for tiny metal needles to be fitted into a hairbrush-shaped cone at angles and lengths that would force light to pass around the cloak. This would make everything inside the cone appear to vanish because the light would no longer reflect off it.

"It looks pretty much like fiction, I do realise, but it's completely in agreement with the laws of physics," said lead researcher Vladimir Shalaev, a professor of electrical and computer engineering at Purdue.

"Ideally, if we make it real it would work exactly like Harry Potter's invisibility cloak," he said. "It's not going to be heavy because there's going to be very little metal in it."

The still-theoretical design will be published this month in the journal Nature Photonics."

Just think of the possibilities if we all had access to this new technology folks:

American to Iranian: "Hey fella, you won't see us coming when we bomb the crap out of your country!"

Iranian to American: "You are right of course, but what will you bomb?"