He was also an adjunct professor of 연기학담당 at Daekyeung University in 1997. Since 2007, Yoo has been an activist of Sunfull Movement, a non-profit organization against cyberbullying.[2][3][4]
On December 29, 2007, Yoo landed in the news for assaulting two producers of The King and I. Yoo was reportedly enraged because the scripts were routinely turned in late, which exhausted his wife Jeon In-hwa, an actress in the TV series. He later apologized for the incident.[5][6]
^Lee Deok-haeng (May 6, 2022). "ì어겐마' 이준기-유동근, 낚시터서 은밀 접선..폭풍전야 예고" ['Again My Life' Lee Joon-gi and Yoo Dong-geun, secret contact at the fishing spot... Prediction of the eve of the storm] (in Korean). MT Star News. Retrieved May 6, 2022 – via Naver.
^Go Jae-wan (October 14, 2022). "[연극] 정보석·유동근, 연극 '레드' 출연…12월 20일 개막" [[Play] Bo-seok Jeong and Dong-geun Yoo to appear in the play 'Red'... Starts December 20th] (in Korean). Sports Chosun. Retrieved October 14, 2022 – via Naver.
^Woo, Bin (January 1, 2019). [2018 KBS 연기대상] 유동근 대상 "장미희 덕분인데 내가 왜..대하드라마 부활 기원" [[2018 KBS Drama Awards] Donggeun Lee Grand Prize "Why am I ... thanks to Jang Mi-hee.]. Ten Asia (in Korean). Archived from the original on January 1, 2019. Retrieved January 1, 2019 – via Naver.
^Jeon, Aram (October 2, 2018). [종합] '2018 KDA' 유동근, 대상 영예…'같이 살래요' 4관왕 '쾌거' [[Comprehensive] '2018 KDA' Dong Keun Lee, Grand Prize 'Let's live together' 4 crowns 'comfort']. Xports News (in Korean) – via Naver.
^대중문화예술상 2011년 [2011 Popular Culture and Arts Awards]. Korea Creative Content Agency (in Korean). Archived from the original on July 12, 2020. Retrieved May 31, 2021.