the big chains like a&w dont make it that good. if youre ever in quebec, try it at la belle province, or any small restaurant. theres a good combo where you get their hot dogs and poutine for a great price. basically, its french fries, with extra curdled cheese, but in chunks, covered in gravy, so the cheese melts. the only downside is that its so fattening.
http://www.arthurhungry.com/pictures/may04/poutine2.jpg it may look nasty, but its soooooo good.