Many people enjoy watching K-drama or any Korean show program. You-tube isn't really a good site to download Korean things because You-tube isn't Korean website. Usually I use those sites to download K-drama/show program:
http://www.imkorean.tv/
http://jjangq.co.kr/
I prefer downloading from imkorean, because the other sites must have ID to get the movies that we want to watch or download.
How to download:
1. Go to site http://www.imkorean.tv/
2. Click/choose a movie you want to download. (The site has only Korean language so just look at the pictures to choose the movie or translate it from
google traslate.)
3. Choose the chapter you want to watch and click the green button which says '무료보기 (Watch for free)'.
4. Wait until the buffering finish. (Usually one chapter takes 30 minutes to finish the buffering.)
5. When the buffering is finished and the movie is completely loaded, open realplayer movie downloader. (If you don't have any, just download it, it won't take too much time.)
6. Click download from the realplayer.
7. Your movie is downloaded, enjoy the movie!