Yoo later hosted the show "X-Man", which soon grew to be one of the most popular and highest rated shows in South Korea. During that time, Yoo became increasingly popular and many programs began to nickname him "the nation's MC". He went on to host various shows, including "New X-Man", "Old TV", and "Haja! Go!" ("Let's Do It") for SBS, but these were all soon canceled due to low ratings on Sunday evenings. However, "X-Man" has found success in international syndication, and Yoo gained popularity among Korean Wave fans.