To note: Only the Takishi part (box) is j-horror, Dumplings is chinese, and Cut is korean.
Speaking of Korean films, Memories of Murder is on Comcast On Demand in the free movies section right now. I highly suggest it, as it is one of my favorite movies of all time.
Box is definitely the weaker of the three. Dumplings is my favorite one. I will have to check out the full length version.
By the way, does anyone remember the name of that movie that takes place in a girl's school? They make wishes by walking up some stairs, and something bad results from it (I won't spoil it).