I haven't seen it, but I have heard Takashi Miike's AUDITION, but I have seen 4 other films by him, two which are REALLY disturbing(Ichi the killer & Visitor Q), one Japanese western with it's actors speaking english, and a cameo from quentin taratino (Sukiyaki Western Django) and one kid's film (the great yokai war)

thanks for answering my question. i had seen oldboy a few years ago and then more recently lady vengeance and had heard there was another similar film but was not sure exactly how they were all related. also, the friend of mine who suggested oldboy to me also suggested a movie called audition that you may want to check out if you have not yet.