Apparently a Quebecker cooked it up in the 1950's as just the job to warm a bloke up and keep him warm in the long Canadian winter. It stayed pretty much a Quebec regional dish until it started to grow in popularity in the 1980's-90's. Once it hit the big cities, like Montreal, it exploded and was soon adopted in English speaking Canada. They now have poutine restaurants in Toronto, Calgary and Vancouver. The Calgary chain recently opened a poutine restaurant in Chicago. Canadian expats - especially celebrities - have popularized it in L.A. and New York so it's an option in some restaurants there. For anybody who goes to Montreal, try La Banquise, one of the most famous poutine restaurants in the country now. It has something like 37 different poutine options from the regular chips, cheese curds and gravy - to barbecue sauce instead of gravy. They also do a pepper sauce and they have extreme options like bacon gravy or smoked meat sauce with bloody big chunks of pastrami.