Next week marks the 11th International Women's Film Festival in Seoul. Most of the screenings, if not all, have English subtitles, and include many Korean films as well as a few international selections. There are also discussions and a conference associated with the festival. The full schedule is available here. I attended a few screenings and the conference last year and found the festival very well organized and foreign friendly.
Among the notable films that I've heard good word of mouth on include:
Wendy and Lucy (Kelly Reichardt, 2008)
The Beaches of Agnes (Agnes Varda, 2008)
Treeless Mountain (Kim So Yong, 2008)