Mitch Pileggi

Mitchell Craig "Mitch" Pileggi (born April 5, 1952) is an American actor. He was born in Portland, Oregon. Pileggi is best known for his role as Walter Skinner on "The X-Files". He had a recurring role on "Stargate Atlantis" as Colonel Steven Caldwell. He appeared in the 2008 movie "Flash of Genius". In 2008, he began a recurring role as Ernest Darby in "Sons of Anarchy". He starred as Harris Ryland in the TNT revival of "Dallas" (2012–2014).