I've always set up the mirrors so that as something leaves the rear-view, it shows up in the side mirrors... Did this on the test drive of the 370Z as part of my preflight and the salesman was mystified until I explained it - and it drives friends nuts when they ask to drive whatever it is I have at the time as they're so used to seeing the sides of the car.
Another lost art probably.
I will say that the backup camera in the Nismo Tech is a godsend... First one I've ever had, and it works a treat for putting the Z exactly where I want it when backing in.