While I enjoyed both parts of Mesrine, and agree with Pink that it was unappreciated, it really has nothing on OldBoy. I have watched this film countless times, so much so that I can watch without the subtitles and know what is being said. The direction is amazing, some of the shots are just breathtaking, yet subtle. The story itself is brilliant as well, with an ending that will stick with me for the rest of my life. Everone's acting is top notch, can't fault anyone in this department. If I wasn't working right now I would write a f*cking essay on how much I love Oldboy but ill keep it short and sweet.
Pink, watch it again, I think you will agree it deserves the status its got.