Sterling Kelby Brown born April 5 1976 is an American actor He is the recipient of various accolades including three Primetime Emmy Awards an Academy Award nomination and a Golden Globe Award He was included in Time magazines list of the 100 most influential people in the world in 2018 After graduating from college Brown acted in a series of roles in the regional theater He has also appeared on numerous television shows such as ER NYPD Blue JAG Boston Legal Alias Without A Trace Supernatural and Third Watch He was a regular in the Starved comedy and has also appeared in films including Stay with Ewan McGregor Brown Sugar with Taye Diggs and Trust the Man with David Duchovny and Julianne Moore He appeared in the television series as a recurring Supernatural where he portrayed vampire hunter Gordon Walker Brown played Dr Roland Burton in Army Wives He also represented Detective Cal Beecher in Person of Interest In 2008 he played David Mosley in the episode of Patience by Eli Stone In 2016 Brown starred in the FX miniseries The People v OJ Simpson American Crime Story as Christopher Darden for which he won the Primetime Emmy Award for Outstanding Supporting Actor in a Limited Series or Movie at the Primetime Emmy Awards