Roman Polanski's The Ghost Writer is an exceedingly well-made thriller of the caliber that I have come to expect from Polanski, despite the flops he's made both recently and in the past. The plot follows a new ghost writer (McGregor) who was hired to help the former British Prime Minister Adam Lang (Brosnan) write his memoirs. The movie sets the stage quickly and gets more mysterious even quicker. The previous ghost writer died under curious circumstances, the new ghost writer was hired as fast as possible for a huge profit, and Lang just got accused of war crimes and crimes against humanity for aiding the CIA in torturing terrorist suspects.

Note: it seemed as if the movie was edited for language (dubbed over, specifically) so that it could be released as a PG-13 movie. I suppose they did it to try to make more money, but the movie wasn't publicized well enough and it didn't play in enough theaters to make it a smart decision. And it just wasn't done in a particularly professional manner. Bad move, distributors, bad move.
IMDb link: http://www.imdb.com/title/tt1139328/