NorthStar Hobbies in Mississauga, Wings and Wheels, Hornet Hobbies, there is one that is mostly figures, I think it was called The Sentry Models? Someone can correct me on that one. There was one also out about the 5200 block of Yonge, Keith's Hobby, although I am not sure if it is still there. If you like aircraft, then Aviation World out by the airport.
Do a Google Search for "Toronto Hobby Shops" and there is about 4 pages of them that come up....some of them are mostly train, or mostly RC....but there is a fair amount of others.....seems like more than I actually found when I was up there about 18months ago!