In answer to your question Deb, I do believe there is - they're the opposite on countries that drive on the left for signalling purposes:
http://www.ctc.org.uk/DesktopDefault.aspx?TabID=3804
I was chuckling at this thread a while back, until I got my bike back from the workshop today, after having had the cassette replaced.
Apparently I'd managed to fit my rear brake blocks, not only back-to-front, but also upside down! I simply followed the instructions on the packet - how did that happen?! :o
Luckily my mechanic is a lovable guy and not at all into putting anyone down, it just tickled him - and he was more worried about my reduced braking power than reducing my ego.
Kinda embarrassing, all the same!