When "The Strangers" came out this year, my friend told me that if I like disturbing movies, then I had to rent "Oldboy".
The word "disturbing" doesn't quite cover the scope of what happened in this film. The main character is given 5 days to unravel a 15+ year mystery. (She was feisty, but not even on her best days could Jessica Fletcher meet this deadline!) During his journey, the following words apply: "Disturbing", "Nightmarish", "Depraved", "Freakin' Bizarre", "Who the Heck Wrote This?????".
(Note: Here's your newest poster's first attempt to write a vague review. Allow me to say that I couldn't have picked a better movie to be vague about. To give more info would reveal too much.)
Recommend: Um, no. I would never recommend this to another person. In fact, the "friend" that recommended this is now dead to me. But, if you like watching women on the toilet, you should watch this film. In the privacy of your own home. With the blinds shut.