OK, so exactly what is the Rapiscan good for?

This article, which (NB) contains an actual Rapiscan image of a woman, indicates that the Rapiscan machines currently being used by the TSA can easily be fooled by contoured places on the body, and that they are virtually useless against plastic explosives.

In other words, they won't detect a gun, knife, or detonator as long as it's covered under a well contoured region of plastic explosives.  It's not exactly clear to me exactly what advantage is conferred by replacing metal detectors with this technology, to be very blunt.  Maybe it's time we actually pay attention to what the Israelis are doing.

Or does that make too much sense?

Addendum: Gorfinkel gets it exactly right.