A recent CF featuring IU for Samsung Galaxy S Hoppin was recently unveiled. The CF also features actor Jang Seo Won, who rose to popularity through his comical role as the Action School stuntman in the recently finished drama, "Secret Garden". The ad shows Jang Seo Won hopping onto a bus while he fanboys over IU, and he decides to watch her music video for "Good Day". Because he was so absorbed in imitating the dance moves in her MV, he doesn't realize IU gets on the bus, and in turn, IU does various cute actions to try and get him to look behind him. Jang Seo Won only takes notice of IU right at the end when she gets off the bus, cries in regret ,and yells at the bus driver to stop the bus. Check out the cute CF down below! Tip: yellow-ish