On the way back from a terrifying journey to Roche Bros. in West Roxbury (the parking lot was even more insane than usual; thoughtfully, however, the store had almost every single register open), the kidlet and I stopped at Romano's in Roslindale Square for some of their poutine.
Not bad at all. I'm no expert, but it seemed like they swapped in mozzarella balls for the cheese curds, but as I'm no expert, I think I preferred it that way, anyway.
If you want to try Quebec food at a Mexican/Italian place in Roslindale, they have it on the regular menu on weekends for $6.50 (you can get it the rest of the week if you give them 25 minutes notice). They're right at the corner of Corinth and Washington streets.