Yes, it's a wacky idea. My mom has a D80 and it took me all of 10 minutes to pick it up, turn it on, learn to change the settings, and know it well enough to teach her how to use it. It's the same basic principle as a 40D -- a dial up top, a dial in the back. Small things like where to change the preferences can be easily picked up by a small bit of trial and error and maybe printing a pocket reference guide for the field.

