I've also seen more and more TSA agents not afraid to show a sense of humor. Maybe somebody told them that they no longer need to act like the Gestapo. Undoubtedly, there are some

http://www.msnbc.msn.com/id/5781907/site/newsweek/

on a power trip, but I'm sure the vast majority are good people earning a living doing a thankless job enforcing some silly rules (e.g. take off all shoes).