Like somebody was saying on Fark, this sounds like what they've been doing for 15 years on Real World: taking extreme stereotypes and pitting them against each other. I especially loved the SNL skit for this:
Bill: Hey, I'm Bill. I'm from Oklahoma, and there's nothing I hate worse.. than Irish people.
Brian: My name is Brian Kelly, and I'm from Dublin, Ireland. And I hate the English and black people!
Jeremy: Hello. I'm Jeremy, and I'm from London. There's nothing I hate more than regular American black women.
Tammy: My name is Tammy, and I'm from Detroit. And.. I hate Italians!
Anthony: Anthony. Brooklyn. I hate poor white trash.
Suzanne: I'm Suzanne. I'm poor white trash from Oklahoma.. and I hate Eskimos.
Tookeet: Tookeet.. [ speaking Inuit ] ..lesbians.
Becky: [ obviously a lesbian, no explanation needed on her part ] I'm Becky.
Anyway, 30 Days sounds like it would pull it off much better than some ABC bullshit. I need to put that show on my DVR. Spurlock seems to have a good idea going for him.