Natasha Delahunt Natasha Delahunt is a casting department member and actress who worked as extras casting assistant on J . J . Abrams ' . Originally from Columbia , South Carolina , Delahunt received her BA degree in Theater from the University of South Carolina in 1997 . Other projects on which Delahunt served in the casting department , mainly as a casting assistant or extras casting assistant , are the drama " Lords of Dogtown " ( 2005 ) , the pilot episodes for the television series " Boyss Life " ( 2006 ) and " The 12th Man " ( 2006 , with Wallace Shawn ) , the action sequel " The Fast and the Furious : Tokyo Drift " ( 2006 ) , the science fiction thriller " Next " ( 2007 , with Jim Beaver and Charles S . Chun ) , the war drama " Battle for Haditha " ( 2007 ) , ' drama " Charlie Wilson ' s War " ( 2007 , with Brian Markinson , Cyia Batten , Rachel Nichols , Faran Tahir , Pavel Lychnikoff , Jim Jansen , Spencer Garrett , and Ron Ostrow ) , the adventure sequel " National Treasure : Book of Secrets " ( 2007 , with Bruce Greenwood , Alicia Coppola , and Albert Hall ) , and the comedy " Walk Hard : The Dewey Cox Story " ( 2007 , with Terrence Beasor ) . In addition , she served as post - production assistant on the television movie " Ring of the Nibelungs " ( 2004 , starring Kristanna Loken ) , as production assistant on the comic adaptation " Constantine " ( 2005 ) , and as background coordinator on the drama " The Great Buck Howard " ( 2008 , with Patrick Fischler , Wallace Langham , Adam Scott , and George Takei ) . As a dancer , Delahunt worked on the horror thriller " The Skeleton Key " ( 2005 ) , as a two - step dancer in the drama " Americanizing Shelley " ( 2007 , with Wil Wheaton and Nancy Guerriero ) , and again as a western dancer on the science fiction thriller " Race to Witch Mountain " ( 2009 , with Dwayne Johnson , Ike Eisenmann , Robert Clendenin , and Arlo Hemphill ) . As an actress , Delahunt did background work on an episode of " The O . C . " ( 2005 ) , the thriller " Syriana " ( 2005 ) , ' s adventure movie " Poseidon " ( 2006 ) , an episode of " Jake in Progress " ( 2006 ) , the comedy " Walk Hard : The Dewey Cox Story " ( 2007 ) , and the adventure sequel " National Treasure : Book of Secrets " ( 2007 ) , as well as " Jimmy Kimmel Live ! " ( 2007 ) , " Brothers & Sisters " ( 2007 ) , " Life " ( 2007 ) , " Boston Legal " ( 2007 , two episodes ) , " Hancock " ( 2007 ) , " My Name is Earl " ( 2007 ) , " Cavemen " ( 2007 ) , " Superhero Movie " ( 2008 , with Christopher McDonald and Brent Spiner ) , and " Raising the Bar " ( 2008 ) . Additional work in supporting and background roles include the comedies " 500 Days of Summer " ( 2008 , with Jennifer Hetrick ) , " Role Models " ( 2008 ) , " Labor Pains " ( 2009 , with Willie Garson ) , and " The Ugly Truth " ( 2009 , with Justin Rodgers Hall ) , and the fantasy action film " G - Force " ( 2009 ) . More recently she had a featured role as a high school mom in an episode of " Without a Trace " and worked as a stand - in for and on the television series " 90210 " , like Melissa Vinicor , as well as a stand - in on the comedy series " Men of a Certain Age " ( 2008 , starring Scott Bakula ) .