I agree. Kyo Hye Sun is terrible at kissing. I hated how she makes faces when a shirtless Jiro Wang is coming to kiss her in Absolute Boyfriend. Urgh. And she wasn't that good in Boys Over Flowers too.
I hated the kisses from Personal Taste. I am really not a fan of Son Ye Jin and couldn't stand her with Lee Min Ho.
The ones in Heartstrings, Full House and You're Beautiful were also bad.
And I don't like how Mike He seems like he is eating his co-stars be it in Devil Beside You or Love Keeps Going. Someone has to tell him to not move so much. Actually lots of Taiwanese actors overdo the kissing and make it seem lame.