'Grey's Anatomy's' Martin Henderson on Nathan vs. Owen, Patrick Dempsey's Legacy

SPOILER ALERT: Do not read ahead if you have not seen the Nov. 19 episode of “Grey’s Anatomy,” titled “Things We Lost in the Fire.” “Grey’s Anatomy’s” new leading man Martin Henderson has ruffled many feathers since he walked into Grey Sloan Memorial Hospital as Dr. Nathan Riggs. Butting heads with Owen (Kevin McKidd), the...