Welcome to the forum Montreal Kiltie from 7 hours due east - please post in the new member forum for a warm welcome from everyone else.
C152 Poutine is indeed a Montreal invention (LeFleurs I believe). French fries (chips), squeaky cheese curds and gravy what not to love. Its just heart attack in a bowl.
I love going to Montreal, more so than Toronto, and have never had a problem with the language barrier. Be sure to go to Schwartz's or Ben's for Smoked Meat, I usually go home with a brisket because it is the only place to get real Montreal Smoked Meat. Take note of their solutions to the transportation problems, it always amazes me - you're driving along a highway that suddenly dissapears beneath an office building and when you come back out you are on the other side of the island.