I think the most famous entertainer in Korea is You Jaeseok. You Jaeseok is a comedian and an MC of  a lot of talkshows.
Some people call Jaeseok “유느님”. It is a compound word for "You" and "God". The reason why people call him that is because Jaeseok is not only talented, but he also has good abilities to proceed the program, that's why people get a good feeling when they see him.
The TV show he is on these days is “You Quiz?”. This program is a talk show that invites people who are common around us. Sometimes, celebrities are on the show but normally common people are the main character.

----------------------------------------------------------------------

Good morning, Brook! Wow, you also know a lot about You Jaeseok just like me ^^ Thank you for sharing this idea about the most famous entertainer in Korea. I agree with what you said about him being talented. Hehe!

Please review and take note of the corrections I wrote above. Keep it up! ^^