@rxxn: You're Beautiful. The best drama EVER!!!
@pamn

1 Litre of Tears: You should definitely give it a try, this drama is a must watch!!! though be prepare to shed your share of tears

Signal: Very good drama one of the best of last year
@fanitha: School 2013 
@tbhbanqtan cheese in the trap is a good drama
I also recommend w and weightlifting fairy Kim bok joo
I Remember You
Love in the Moonlight
Healer (a must-watch in my opinion)
Tunnel
Save Me is a must see!!!
Signal
My PS Partner
Age of Youth
Healer
Queen In Hyun's Man
Secret
Cruel City
Save Me
49 Days
Liar Game
Defendant (if you loved Ji Sung in Secret, you'll probably love this drama as well! no romance, though...) :D
I'm actually starting Defendant next, so great call! And no romance isn't a bad thing for me, I am not a huge romance fan to begin with unless it's done in a certain way.

I'm recommending another Ji Sung gem right back at you: Kill Me Heal Me! You can't miss this one.
Ahhh, I've been putting off KMHM for way too long. I actually started it a while ago, but didn't have the time to keep going. will try it again when I have the time... :-)

Healer! It's a must watch, IMO. The romance and plot were both done very well and the action scenes were on point (Ji Chang Wook