Helpful Hints for Holiday Travelers 2010
http://www.tsa.gov/travelers/holiday_travel.shtm

Helpful Hints for Holiday Travelers Checklist (printable .pdf)
http://www.tsa.gov/assets/pdf/helpfulhints.pdf

Advanced Imaging Technology (AIT)
[full body scanners]
http://www.tsa.gov/approach/tech/ait/index.shtm

Q. Where are imaging technology machines located?

http://www.tsa.gov/approach/tech/ait/faqs.shtm
"A. Currently, there are 385 advanced imaging technology machines located at 68 airports nationwide. Airports that have the technology include the following." see half way down the page in link directly above (the list is too long to post here)