This week: Cynthia Nixon guest stars as a woman who suffered a stroke but is still fully conscious and aware of her surroundings, Sam and Luka consider more children, Morris is a huge racist POS, Neela helps a young boy with a suspicious home life, Pratt looks more like a leader, Dubenko tries to get a date with Abby, Carter and Wendell finally break up, and Susan considers her options for Chief Resident.