11/16 is very clear to someone in the U.S., and very confusing to anyone else:

http://en.wikipedia.org/wiki/Date_format_by_country

relevant XKCD: http://xkcd.com/1179/

edit: actually, according to my first link, Belize, Canadian newspapers, the Federated States of Micronesia, the Philippines (when speaking English, although not Filipino), and Palau all also use the month- day- year date system. TIL!