Between "shine" and "go crazy" I choose "shine." Although the theme of the cursed prince is not new in Korean dramas (see The Kingdom of the Winds, for instance) and the talent of Jang Hyuk pulled at my heartstrings ever since I first saw him in Chuno, watching Shine or Go Crazy was such a joy! The humour of this series, the unexpected turns for the better in some of the antagonistic characters, the hope that is nourished and demolished and then flourishes again, all these make it special among period dramas; all these make it a little bit (just a little bit) less heartbreaking, all these make the ending more tolerable; all these set a lighter, more pleasant tone than other stories of the kind. I was so nervous and worried about watching the last episode that I couldn't believe I actually felt at peace with it. It was so rewarding to watch!
I agree with the ( only to date) other reviewer here that "Gaebonga, you rascal" is the leitmotif of the film, but isn't it a great one? Doesn't he utter it so lovingly? Jang Hyuk annoying? Oh, no, he is just so so ( or shall I say So So?) into his role, which he plays brilliantly. He shines. We, as his audience, can only go crazy. ( For him and not only.)