Most movies got mentioned already. I remember watching and enjoying these ones:
Attack the Gas Station (1999)
My Sassy Girl (2001)
Musa: The Warrior (2001)
Kick The Moon (2001)
Failan (2001)
My Tutor Friend (2003)
A Moment to Remember (2004)
Once Upon A Time In High School (2004)
My Wife is a Gangster 3 (2006)
The Restless (2006)
I'm a Cyborg, But That's OK (2006)
A Dirty Carnival (2006)
A Company Man (2012)
Attack the Gas Station (1999)
My Sassy Girl (2001)
Musa: The Warrior (2001)
Kick The Moon (2001)
Failan (2001)
My Tutor Friend (2003)
A Moment to Remember (2004)
Once Upon A Time In High School (2004)
My Wife is a Gangster 3 (2006)
The Restless (2006)
I'm a Cyborg, But That's OK (2006)
A Dirty Carnival (2006)
A Company Man (2012)