Borat - fake Kazakh journalist tours America under the guise of research for his home country.
Wow, this wasn't what I was expecting at all. Everything I'd heard was that this was a humorous exercise in encouraging people to reveal their unpleasant views, but there's actually very little of that, and the Americans generally come off fairly well. The film actually comes over as Sacha Baron Cohen taking out revenge against a patriotic Kazakh bigot/PE teacher that humiliated him in school, because most of the film is trying to get laughs from his vicious vision of a real country that few in the West (Cohen included, one suspects) know anything about. For me, most of the funny stuff comes from Borat's interaction with his producer ("f**k off, Death"), who has the most spectacular pair of tits I've ever seen on a man.
Also, it's pretty clear that Cohen's vision of Kazakhstan is based on Fife, which is frankly outrageous and the Kingdom has my sympathy for this slur.