I really have mixed feelings about the movie. On the one hand, some of the clips I've seen really are funny. But I hear the comedian who plays Borat is getting sued like crazy for all kinds of contract violations. Falsified release forms (for a foreign documentary, not an internationally released full movie), false declared intentions, and just general slander. Apparently some of the people in the movie were totally oblivious to the fact that they were going to be in it at all until they found out about the trailers/reviews.
I mean, yeesh, not saying they were the brightest crayons in the box and weren't horribly easy targets... but still, to have that kind of shock thrown at you... not really the nicest thing you could do to a totally decent and random person.