I am told by those in the know that the TSA has had a major shake-up in the courtesy department, and if any agent is less than completely courtious (business-like) they will be shown the door, pronto.
At OAK last week, through TSA security in three minutes, flat. Very well organized.
For once I can actually agree with 411A, TSA has much improved. UK Airport Security is probably about the worst of the western world nowadays...