Jang Dong Gun, one of Korea's top actors is also one of the smartest. An upcoming episode of the popular documentary show Star: The Secret will feature Jang Dong Gun. On the show there will be a segment revealing that Jang Dong Gun was tested to have an IQ of 143. If you have an IQ of 130 or higher that would put you in an elite level of the top 2.2% of the world, and at 143 you're considered a genius. However, despite his supposed genius, Jang Dong Gun failed college entrance exams to some of Korea's top universities a total of three times. The excuse given for the failure was that he couldn't concentrate on his studies because he was suffering from a lung disease at the time. In a nation of high IQ's, Jang Dong Gun's high score isn't that surprising... but if his failure of the college exams lead him to turn to acting, it worked out for the best for him in the end. This episode is scheduled to air on MBC on November 12th.