She is! I would say she's one of my favorites along with Choi Ji-woo (Na'ek from Stairway to Heaven).
I was watching "Forever Yours" Kim did with Ryu Shi Won (He's such a hottie!) and it's so sad; they're so cute together!
Also, I'm trying to find the drama they did together called "Propose", but it seems to be nowhere. Help?