Actor Yoon Si Yoon decided to help out and work at Dunkin' Donuts for a day. He's known to the nation as Kim Tak Gu from "Baker King Kim Tak Gu" so it suits him to work with pastries. In order to get closer with his fans, he got out there, put on a uniform, and served the customers on the 8th. Who wouldn't want to buy a doughnut from Yoon Si Yoon? [gallery link="file"]