In an article in Businessweek, Michael Chertoff, former Secretary of Homeland Security gives an explanation of how to quickly get through the security checkpoints in an airport. His secrets include having your liquids and electronics accesible for easy removal and replacement. He also recommends having your change etc in your jacket pockets rather than your pants. That way you can lay the jacket, still loaded, in the tray, rather than rifling through your pants pockets.
I'm pretty good with security, but this article made me think, yet again, about optimisation. Smart people think about ways to improve every time single time they do something. Whether it's a conversation or a physical skill or a process that has to be gone through, there's a way to improve it.