 He also stepped into the field of voice-over, contributing his voice for the Korean-dubbed version of the American live action/animated film "Alvin and the Chipmunks" as the main character, Simon, the eldest and the tallest of the Chipmunks, along with fellow labelmates Kangin and Shindong.Heechul also appeared as a radio DJ on SBS Power FM's "" with Park Hee-von from November 2005 until mid-2006.Moreover, he co-hosted SBS's weekly live music show Inkigayo as a substitute for Andy of Shinhwa, later going on to become a permanent host starting April 23, 2006.