For me, if you've watched one, you've watched them all. Playfull kiss doesn't stray too much of the original story, though they did add some of the korean playfulness in it. There were some notes from the Princess's hour as well (see the stuffed bears in the end of the episodes). And it did start nicely, although, I must confess, I didn't expect much from the male lead. However, it was cute, even though the story was full of cliche and the leading lady was a silly, airheaded girl. But, the drama got boring halfway. It lost all the interesting chemistry that the couple had and the cat and dog game got tiring. So, overall, 5 out of 10 for playful kiss.