By Walt Hickey Canada A critical Canadian natural resource has had a rough several weeks, and analysts anticipate that several more months with no production could spell disaster in the billions for the economy. I’m talking about the signature export of Canada, namely, cities that look slightly like other, larger cities in the United States, however are considerably cheaper to film in than New York or Los Angeles. Tuesday, the Canadian Media Producers Association released an impact report estimating $1.757 billion CAD ($1.23 billion USD) in lost Hollywood production spending if a shutdown lasts through the end of June. Film production is a huge deal in Canada: last year, foreign film and television production in Canada hit an all-time high of