I finally got to see Air Canada's Airbus 330 at the airport today!!! I saw it take off on 24L, going as Air Canada Flight 420 to Montreal. I picked up Air Canada's flight schedule last week, and it says that Air Canada will be using their Airbus 330 on Flight 142 from Vancouver to Toronto arriving in Toronto at 3:55PM Toronto time, and departing at 5:00PM from Toronto to Montreal. I am not sure if they will use the 330 every day, or if they will just use it sometimes. They also use the 330 from Montreal to London, and I think they also fly from Montreal to Paris.
I also saw the Charlotte Hornets leave Toronto after their game against the Toronto Raptors on their team charter (a 737-200)!