He starred in popular TV series that kicked off pre-Hallyu Korean drama trends, notably Feelings, A Faraway Country, Mister Q, Secret and Guardian Angel.
[3] Though his popularity dimmed in the mid- to late-2000s, Kim remained active in the entertainment industry as an actor, appearing in the film Mr. Butterfly opposite Kim Jung-eun,[4] as well as the romantic comedy/police procedural Woman of Matchless Beauty, Park Jung-geum, risqué cable drama Hyena, period drama The Return of Iljimae, and manhwa adaptation A Man Called God.
[6] Kim had a scene-stealing turn as a North Korean agent who defects to South Korea in 2010 spy series Athena: Goddess of War.
[10] That same year, he gained new fans after he starred in A Gentleman's Dignity, which portrayed the humorous love lives of a group of close-knit male friends in their forties.
[11][12][13][14][15] After the series ended, Kim and co-star Jang Dong-gun visited refugees in the Republic of the Congo on a mission trip sponsored by UNICEF and UNHCR's World Food Programme.