I know this is not going to be popular with some, but....

I skip families with children. Most of them anyway. Some parents have little Jimmy and Suzie with shoes/jackets off and PSPs and juice boxes gone, but most don't. By the time my license is being checked I have my baggies ready to go, and by the time I can pick up a bin, my shoes and coat are off and ready to go. I'm going around.

The same thing goes for the older generation who is likewise not ready for security. Like the lady on my last flight who refused to take her belt off.