The brief slip up which I am submitting occurs approximately halfway through the movie when Oz receives a postcard from his girlfriend Heather who is apparently in France. On the post card it clearly says something along the lines of "with love from Paris", while the stamp on the top right of the postcard is an American stamp with the American flag depicted on it. Clearly if someone who is vacationing in France is going to send a postcard to the United States the stamp should be French. That is, unless, Heather happens to travel with American stamps in her back pocket.