The Academy Awards are six months away, yet contenders already are off and running. The Toronto International Film Festival, which opened Thursday, offers an early glimpse of potential competitors for Hollywood's top awards, among them theJohnny Cash film biography "Walk the Line," the romances "Elizabethtown" and ""Shopgirl"," the working-stiff drama "North Country," the sister tale "In Her Shoes" and the cowboy saga "Brokeback Mountain." "I think Toronto is, for better or worse, the starting gate for awards season," said festival co-director Noah Cowan. "The awards crop we're already seeing this year is terrific. Some really standout films." A.P. reports.