From 1999 to 2002, money spent on making films in Canada has doubled, as production crews look to save money by exploiting the weak Canadian dollar. By a remarkable coincidence, the number of U.S. cities that give a darn about the Northern migration of moviemaking has also recently doubled, from one (Los Angeles) to two (L.A. and New York.) What made the Big Apple sit up and notice? Well, you don’t really expect New Yorkers to sit still while a TV movie about the life of former mayor Rudy Giuliani is filmed in Toronto, do you?