Eric Christian Olsen, is an American actor popularly known for his role as Austin in the movie Not Another Teen Movie (2001). He is also known for essaying the character of Detective Marty Deeks on the TV series NCIS: Los Angeles. He has appeared on several TV shows such as Get Real (1999 - '00), The Loop (2006 - '07), and Kick Buttowski: Suburban Daredevil (2010 - '12). Olsen's movie credits include Dumb and Dumberer: When Harry Met Lloyd (2003), Sunshine Cleaning (2008), The Thing (2011), and Band of Robbers (2015). His 2017 releases include the movies Sun Dogs and Battle of the Sexes.