Actor Song Il Gook and his triplets Dae Han, Min Gook, and Man Sae, who star in the popular KBS 2 TV entertainment program 'Superman Returns,' is probably the most popular family of the program. The triplets, who recently started to talk, are capturing attention of a lot of the 'Superman Returns' fans, and contributing to the increase of the program's national viewing rate. Since the triplets joined the program, the program's national viewing rate increased to twice as much as that of the other parenting program, 'Where are you going, daddy?' On the latest episode of the KBS 2 TV entertainment program 'Superman Returns' which aired last Sunday, Song Il Gook was diagnosed glaucoma and got shocked at the news that he might lose his vision in the near future. In related news, the KBS 2 TV entertainment program 'Superman Returns' tells a story of celebrities and their children. Actor Song Il Gook and his triplets Dae Han, Min Gook, and Man Sae, MMA fighter Choo Sung Hoon and Japanese top model Yano Shiho's daughter Choo Sarang, singer Tablo of Epik High and actress Kang Hye Jung's daughter Haru, and comedian Lee Hwi Jae and his twin sons star in the show. The KBS 2 TV entertainment program 'Superman Returns' airs every Sunday night.