The government's plan to install body scanners in dozens of airports could lengthen security lines and congest terminals, airline and airport officials warn.http://www.usatoday.com/travel/flights/2010-02-09-airport-scanners_N.htm
Scanners that look through passengers' clothing to find hidden weapons are significantly larger than the metal detectors they will replace. And they take at least five times longer to scan a single passenger.
If you don't like the lines, don't fly.
Personally, I'd rather fly safely.