Hater Depot has brought up 정 in the forums and its time to revisit that critical little nugget of understanding Korean social culture, for any of you who might be trying to get your head around it. Or 체면. Or even 눈치, for that matter. God knows it helps when dealing with co-workers, students, and Korean friends.

http://wiki.galbijim.com/Jeong
http://askakorean.blogspot.com/2008/04/super-special-korean-emotions.html