Good advice. Essential for things that cut you or shoot radiation at you.

It would also be nice if consumer electronics devices did this. I remember badly reflashing my iPod once; the reflash locked up and the iPod was stuck displaying a message without the backlight on. There was no way to reboot it without waiting for the battery to drain itself (or to open the device up). This took a few days, but I did get it working again.

A simple hardware reset switch would have saved me a lot of time. I don't buy Apple products anymore.