Well i have just heard that they have started to put PTV's on their 744 and 777.
I flew on them about 1-2 months ago and really enjoyed my trip!!
Do a Search on this website for Korean Air and it will give you all the infomation you need about them.
I personally think they are one of the best airlines out there and would fly them in an instint if i had the oppurtunaty. Their service is fantastic and their Entertainment is also great. We watched 5 movies on a 11.30 hour flight. In my opinion better than SQ.
Haere RA (From New Zealand)
AirNZ: The worlds warmet welcome!!