S5, E1: Dr. Cox puts J.D.'s skills as an attending to the test. J.D. (Zach Braff) struggles with decision-making and responsibility now that he is an attending physician, all the while Dr. Cox (John C. McGinley) is testing his skills. And while Elliot (Sarah Chalke) is learning the ropes in her new hospital, she still feels more comfortable hanging out at Sacred Heart. Meanwhile, Carla (Judi Reyes) is ready to have a baby, but Turk (Donald Faison) afraid of moving forward continues to slip her birth control pills. Ken Jenkins and Neil Flynn also star.