Harrison stayed with the show for all five seasons while making guest starring appearances on “Law & Order: Special Victims Unit” (NBC, 1999- ), “That ’70s Show” (Fox, 1998-2006), “Boston Public” (Fox, 2000-04) and “The O.C.” (Fox, 2003-07). In 2002, he made his feature film debut with a small role in “Orange County,” then played a high school student struggling with his girlfriend (Lizzy Caplan) over the decision to have sex while under the thumb of their school’s abstinence pledge in “Everybody’s Doing It” (MTV, 2002-03). After starring in the straight-to-video rural drama, “Lightning Bug” (2004), Harrison returned to regular series television with the critically lauded, but sadly short-lived sitcom, “The Loop” (Fox, 2005-07). Harrison starred as a recent college grad who finds work with a major airline in Chicago and becomes the first in his family to take on a real job. Despite “The Loop” being canceled after its second season, Harrison bounced right back with his next series, “Reaper” (CW, 2007- ), in which he was a young slacker who learns that his parents pledged his soul to the Devil, obligating him to retrieve souls that have escaped from Hell.