He played Wes Seifer on the O.C.
Matthew Jerome Barr was born on February 14, 1984, in Allen, Texas, United States, a suburb of Dallas. Matt is the son of Mike Barr, a former football coach at Purdue University and Southern Methodist University, who is now in the real estate business, and DeDe Barr, a portrait artist. Matt has a younger brother, Luke Barr, and sister, Sara Barr. In Matt's fourth grade, his family moved to Fairview, Texas, another Dallas suburb.
Matt was active in the Allen High School theater program, and had major roles in many school plays and musical theater productions. This included the role of Tommy in Meredith Wilson's The Music Man, and a court jester in the school's madrigal dinner.
While a senior at Allen High School, Matt learned that Richard Linklater was planning to film a movie about football in Austin, Friday Night Lights. He auditioned for a role. Although this movie ended up being put on hold for another two years and Richard Linklater was replaced by Peter Berg as director, Matt made some favorable impressions. Producer Ann Walker Mclay and Linklater, collaborator and director Clark Lee Walker offered him the lead role in their film Levelland that was being shot in Austin in the late spring and early summer of 2002.
Half a year after the filming of Levelland ended, in January 2003, Matt moved to Los Angeles, where his first acting job was a scene on the TV show ER