Yoo Jae-Seok (or spelled Yu Jae-Suk; born on August 14, 1972)  

Yoo Jae-Seok is a South Korean comedian and television comedy show host. Nicknamed as "MC of the nation" , people (netizens) have voted him for the most popular Korean comedian for five consecutive years (since 2004). He has hosted several variety television shows in South Korea, including the hugely popular program Infinite Challenge. Nicknamed "The Grasshopper", due to early appearances dressed as a grasshopper, he is now known for his quick wit and likability with most demographics, and has established himself as one of Korea's top (if not best) comedians and TV personalities.

Yoo Jae-Seok was born as the first child out of three (he has two younger sisters) on August 14, 1972 in Seoul, South Korea. He is 177 cm (roughly 5'8"), 71.5 kg (about 158 pounds) and has B+ blood type. Yoo Jae-Seok attended the Seoul Institute of the Arts, but had been unable to receive his degree due to his busy schedule as a comedian.

His first Grand Prix was for a program called Happy Together Friends, which concept based on TV personalities trying to find their school friends (five of them) out of many (false friends) who are sitting behind the desk. The show brought reminiscence upon the viewers' school days, and became very popular. This Grand Prix is even more memorable, not just because it was Yoo's first one, but it was from the broadcasting system where he debuted .....

  Wikipedia : http://en.wikipedia.org/wiki/Yoo_Jae-Seok  
  1. Infinite Challenge
Host (since 2005.04.23)
  2. Happy Together Season 3
Co-Host (since 2007.6.28)
  3. Good Sunday - Running Man Co-Host (since 2010.7.10)
  4. Yoo Jae-seok & Kim Won-Hee's Come to Play
Co-Host (since 2004)