The Toronto Film Festival is back and as big as ever, and while the festival has gained an international reputation by embracing films from around the world, it, like nearly every other cultural enterprise in the country, reserves a significant portion of time and exposure for home-grown work. This year’s top Canadian film at the TFF will be Gary Burns’s A Problem With Fear, which impressed festival organizers enough for them to give it a prime opening-night showing, outside of the normal “Perspective Canada” portion of the event.