||but now it's everywhere. Latin America (often with cheese and salsa), the caribean, and many other places too. A restaurant near where I live (the Epicure in downtown Toronto, Canada) had an International Festival of Poutine a while ago, and served poutines from all over (some were probably made up, but they were tasty).
The basic idea is some form of potato or similar tuber, deep fried (usually in 'fry' form), some kind of sauce, and cheese. A simple peasant food that has spread all over the world, and is one of the few Canadian contributions to international cuisine. For the best of the original sort though, nothing beats the stuff they make in Quebec. As you go further west in Canada it's harder to find it well made.