1.W

2.Age of Youth

3.The Good Wife

4.Bring It On,Ghost

5.Ie Uru Onna

6.Doctors

7.Sukina Hito Ga Iru Koto

8.Happimari:Happy Marriage!?

9.Cinderella and the Four Knights

1. W
2. Age Of Youth
3. Cinderella and Four Knights (what can I say, I love cheesy cliches XD)
4. Doctors
5. Uncontrollably Fond
1. W
2. Bring It On, Ghost
3. Uncontrollably Fond
4. Cinderella and Four Knights
1. W
2. The Flower in Prison
3. Uncontrollably Fond
4. Sukina Hito Ga Iru Koto
5. Doctors
1. W
2. Kiss Me
3. Bring it on, Ghost
4. Uncontrollably Fond
5. Doctors 
1.W
2.Age of Youth
3.Bring It On,Ghost
4.Uncontrollably Fond
5.Doctors
1. The Good Wife
2. Age of Youth
3. Juken no Cinderella and Eigyou Bucho Kira Natsuko (I can't decide which is better; in terms of quality and my enjoyment, I think both are about equal)
Hi, I'm new here and to Asian dramas. Definitely gonna watch W since it tops everyone's list. Uncontrobally Fond is the only current one I've watched so far and I'm a fan. I will probably check out Doctors and Age of Youth as well. Thanks!
1. W
2. The Good Wife
1. W
2. Bring it on, Ghost
3. Cruel romance
4. Hapimari: Happy marriage!?
5. Prince of wolf
6. Emergency couple
1. W – Two Worlds
2. Uncontrollably Fond
3. Cinderella and the Four Knights
4. Bring It On, Ghost
4. The Flower in Prison (cant decide which is better)
5. Doctors
1. w
2. age of youth
3. bring it on, ghost
4. koe koi
1.W - Two Worlds;
2.Cinderella and the Four Knights;
3.Age of Youth;
4.Bring it on, Ghost;
5.Ie Uru Onna;
1. w - two worlds 
2. cinderella and the four knights 
3. the flower in prison
4. second to last love
I'm only watching 2 but I'll rank them anyway~

1. W
2. Doctors 

(hahaha - W is on everyone's first spot until now)