Linger around any movie theatre exit during the Toronto International Film Festival and the only question you'll hear more than "What did you see?" is "Who?" And yes, there were star sightings aplenty these past ten days. You could have brought binoculars, packed apples and trail mix, and camped outside the Royal Elgin or the Four Seasons, waiting hours on end for a brief glimpse of the back of Michael Cera's head (your fourteen-year-old sister......