Full Behind the scene:

http://cfs.tistory.com/custom/blog/90/906793/skin/images/%EB%93%9C%ED%95%982%EB%A9%94%EC%9D%B4%ED%82%B9%ED%95%84%EB%A6%842.swf

wahahahahahahahaha~~!! why do i have a feeling that EVERYONE in the set(especially the director lol) LOVES JIYEON??!!! lol!! well...you can CAN'T love her..she's too ADORABLE!!

if cant watch the above link.. try this: (but not full)

http://www.youtube.com/watch?v=J4gGHG2KN6I&feature=g-all-lik&context=G240ac44FAAAAAAAAAAA