It's really useless to explain why Borat sucks (and is just as annoying as Cohen's other character Ali G) because talking about it generates more publicity. Instead, here's a bit of great news I watched today:

Borat gets punched in the face. Repeatedly.

It would be great to see him act like an annoying little twat in the most depressed ghettos of America. Let's see him piss off the gangbangers on the streets, I would pay to see his obnoxious ass get shot. He could make like Bruce Willis in Die Hard 3 and wear a "I hate niggers" sign while walking down the streets of Harlem. Now that's the kind of offensive comedy I would call brilliant. I get the whole social-commentary-slash-getting-bigots-and-chauvinists-to-expose-their-flawed-arguments bit, but I didn't see any of that when he was breaking shit in that eldery couple's shop (and offering a pubic hair as payment) nor when he was purposely being an ignorant and obnoxious asshole on that news show. It felt like he was just after a cheap laugh. The guys from Jackass harass people and it's funny becuase they don't make any pretentions of anything beyond a cheap laugh.