해피선데이
Since October 2007, he appeared on the KBS2's "Happy Sunday: 1 Night 2 Days" (1박2일) as one of the regular cast members, himself replacing Ji Sang Ryul. In his first episode, while stuck with no money and food, Kim, together with ballad singer Lee Seung-gi with the host Kang Ho-dong sang and played the guitar, earning about ₩8,866. Kim C is also known for his unique style of playing guitars and writing several lyrics.