The world premiere of director Duncan Jones' "Source Code," starring Jake Gyllenhaal, Michelle Monaghan and Vera Farmiga will open the 2011 South by Southwest Film Conference and Festival (SXSW), the event said Thursday. The Summit Entertainment release, descibed by the festival as a "smart action thriller," is the second feature from Jones, the son of David Bowie, whose first film, "Moon" debuted at SXSW in 2009.