An acclaimed performer in his native Australia, Sam Worthington rose to prominence in the difficult American market on the strength of his emotionally conflicted turn as a cyborg in “Terminator Salvation” (2009). The path to the Hollywood blockbuster was a long one, marked with arthouse successes like “Bootmen” (2000) and “Somersault” (2004), which caught the attention of producers in the States. His first few attempts to break into U.S. films – including “Hart’s War” (2002) – were met with indifference, but after a steady string of well-received lead and supporting turns in Australia, he