What else is there to say? Tim Hortons is the Dunkin' Donuts of the Great White north. They have Boston Creme donuts, and Boston Creme donuts with maple glaze instead of chocolate.
Tim Hortons is what it is- unpretentious, cheap and ubiquitous. You're not going to have an amazing gustatory experience here, but it does the job after a late night slumming around rue Sainte-Catherine.