+ Tunnel
- Madame Antoine

Aired this year
+ Secret Forest
- The Bride of Water God

Historical
+ Moonlovers: Scarlet Heart
- Gu Family Book

Romcom
+Marriage, not dating
- Secret Garden

Psychological
+ White Christmas
- Kono yo no Hate

Youth
+Age of Youth
- the Heirs or Boys Over Flowers  (Biased because some of them are rich d-bags)

Dramas about aging
+ Gentleman's Dignity
- Reply 1997 (that's a bit of a stretch, but let's say it also is about getting older)

unusual relationships/friendships
+ Please, come back mister
- Goblin

Kdramas before 2005
+ Full House
- Lover's in Paris
(These are the only two kdramas I've seen before 2005...)

Family Dramas (Those daily/weekend dramas)
+ Ugly alert
- New Tales of Gisaeng

Corruption
From the few that I've seen...

+ Iris, Healer
- The K2

Over 20 episodes
+ The King's Woman
- Jealousy Incarnate

Intriguing secondary characters
+ Suspicious Partner
- 100-manen no Onna-tachi (Million Yen Woman)

Mini-dramas (12 EPs or less)
+ 1 Litre no Namida
- Koizora

Siblings
+ Ugly Alert
- Cinderella and the Four Knights

Tomboyish female character