Again, I recommend watching Korean drama. The Hallyu films are very good, receiving international acclaim and putting the Korean entertainment industry on the map.
If you can find them, any of the Korean historical pieces are good. Programs like Damo, Dae Jang Geum, and Duelist are good. TV programs include Full House, All In, Winter Sonata and others are good choices, as well.
Check out www.yesasia.com for Korean movies. They will help you practice listening skills.