​From Wikipedia, the free encyclopedia.   John Joseph Corbett, Jr. (born May 9, 1961) is an American actor and country music singer. He is best-known for playing Chris Stevens on Northern Exposure from 1990 to 1995 and Aidan, Carrie Bradshaw's boyfriend, on Sex and the City. He also played the leading male role opposite Nia Vardalos in Vardalos's hit film, My Big Fat Greek Wedding (2002). He currently stars in United States of Tara as Max Gregson, and appears on NBC dramedy Parenthood as Seth Holt. Description above from the Wikipedia article John Corbett, licensed under CC-BY-SA, full list of contributors on Wikipedia.