I read somewhere that the Chinese have the switches backwards in their planes... i.e. we switch things on by moving the switch up or forward and they switch things on putting the switch down.
I am not sure if it's an urban myth but that would definetly mess me up the first couple of hundred hours.... 
The Russians have always been bad about stuff like that. Like having aircraft engines turn the opposite way.

Heck, they are *still* producing AN-2 Colts... those are the world's largest biplane!
picture of the AN-2, which is 12 passenger
<a href="
http://www.airliners.net/open.file?id=0552299">
Click Here</a> to view the photo<p>
Anyway, I've heard the original AN-2s had the attitude indicator by your knee with all instruments placed simply by wherever the installer felt like putting them that day.