Don's Fish & Chips - Brockville [split from Quebec board]
Though not in Montreal, by a long shot, I've heard co-workers raving about a place called Don's Fish and Chips in Brockville, Ont. Apparently this place draws customers willing to make the drive from Montreal, Ottawa, Toronto, and Buffalo.
I sense not... From http://www.roadfood.com/Restaurant/Reviews/3312/dons-fish-chips it mentions it being a take-out only establishment and on Google Street view it looks to be a very unassuming plaice. http://goo.gl/maps/loqM