TSA's Pre-check program has enrolled a million "trusted travelers" in its program, designed to speed up processing at airport security. Program members generally are able to move through the lines without stopping to remove laptops from cases, take off shoes, etc. The service is also available to members of other government "trustee" programs such as "Global Entry."
Application for the program, which costs $85 for five years, can be made at 330 application centers across the country. for more information from TSA, click HERE
UPDATE: for a current look at Pre-check facilities and information from upgradedpoints.com, click HERE