Watch "30 Days". It's really good. I mean, occasionally it gets a bit simplistic, but considering it's compressing 30 days into an hour show, it really does a great job. Clearly there's a left-leaning agenda at work but the show is even-handed. The last two (the conservative Christian living with Muslims and the different conservative Christian living with gays) could have been very disrespectful to a lot of people but they managed to have everyone's beliefs shown respectfully.
Anyway, good stuff. I hope Morgan Spurlock does it again sometime, but I could see only doing 6 episodes every year or two.