He is also a regular panelist on the talk show Same Bed, Different Dreams, and a permanent cast member of JTBC's Knowing Bros. On June 23, 2009, Seo married Oh Jeong-yeon, a television announcer.
Dia juga panelis reguler di acara talk show Same Bed, Different Dreams, dan anggota permanen JTBC Knowing Bros. Pada 23 Juni 2009, Jang-hoon menikahi Oh Jeong-yeon, seorang penyiar televisi.