ER revisits Dr. John Carter, to see what he's been doing since his departure from County. Now in Darfur, Dr. Carter and his colleague Dr. Dakarai work alongside relief workers to treat famine victims. Back in Chicago, Luka and Kerry differ over Clemente's next step while Pratt and Neela treat a hit-and-run victim. But what's that list Luka's making, and why does Abby think it's so funny?