Jeffrey Dean Morgan (born April 22, 1966) is an American actor of film and television. He is known for his roles as John Winchester in the fantasy horror series Supernatural (2005–2007; 2019), Denny Duquette in the medical drama series Grey's Anatomy (2006–2009), the Comedian in the superhero film Watchmen (2009), Jason Crouse in the political drama series The Good Wife (2015–2016), Negan in the horror drama series The Walking Dead (2016–present), and Harvey Russell in Rampage (2018).