sentences:  The cast includes the main MC Lee Kyung-kyu, who made his comeback into the Korean TV industry with this show; Kim Gook-jin, a famous comedian who recently came back from attempting to become a professional golfer; Kim Tae-won, leader of the legendary rock-ballad band Boohwal; Lee Yoon-seok, a comedian known for his doctor's degree and conversely his ridiculously weak strength (though since joining the show, Kim Tae-won has virtually taken over his title of "Weakling of the nation"); Yoon Hyung-bin, a famous comedian from the show "Gag Concert" who frequently compares himself to Lee Jung-jin, although often to no avail; Yang Joon-hyuk, one of the greatest players in Korean baseball history and currently holds the records for home runs, RBI, and best batting average; and Jun Hyun-moo, a KBS news announcer and reporter known for his variety and comedic skills, who is rising in the entertainment world (also known for his parody of SHINee's "Lucifer" dance).The cast has been through a variety of physically and emotionally taxing missions, usually spanning over 24 hours, performing the likes of serving mandatory military service again, crying, becoming employees of random companies, not smoking for a day, wake-boarding, singing in a choir, participating in an amusement park parade show, and forming an amateur band.The most memorable moment for the program was when 2 of the members (Kim Gook-jin and former member Kim Sung-min) was selected as a guest for the United States Air Force Thunderbirds Acrobatic Team, during their 2009 Far East Tour at Osan Air Base, in South Korea.