I haven't seen Borat, so I don't really have much to say about it (though from a legal standpoint, see this post on the releases signed by participants in the movie). But I'm willing to bet this line from a Toronto Star story about Sacha Baron Cohen is at least as funny as anything on-screen [emphasis added]:
"I think part of the movie shows the absurdity of holding any form of racial prejudice, whether it's hatred of African-Americans or of Jews," said Baron Cohen, a devout Jew who keeps kosher and the Sabbath when he can.