Katherine Heigl had a big smile on her face out in LA last night. Her new movie with Ashton Kutcher, Five Killers, is already underway and he's been twittering about hitting the gym extra and perfecting his tan for his shirtless scenes. Lucky Katherine. For now all eyes are still on Dr. Stevens on Grey's Anatomy. Last week's episode revealed bad news for Izzie and the role of her mother has been cast to be by her side, but we'll all have to stay tuned for the final word on whether or not Katherine will leave the show.