Bob, both you and Cory Drake have opted for a manual fan switch. I'm all for paying attention to your car/gauges but honestly if you overlook this it could have dire $$$$ engine consequences.
I pay attention but having an automatic thermostat just makes sense. My 2 centavos.
David, don't sweat it, my fan runs when I think it shouldn't, and sometimes doesn't when I think it should. But the temp gauge won't lie.