 2006 saw him return to work with acclaimed director Bong Joon-ho in the big-budget monster movie "The Host" which went on to become the best-selling Korean film of all time.Murder mystery "Paradise Murdered" was a surprise hit in 2007, with Kyu Hyun Kim of "Koreanfilm.org" calling Park "an inspired choice for the ostensible protagonist, projecting fatigued compassion and cold calculation in equal measure, his obsidian pupils glistening with streaks of chilling obsession.