Basically, NBC's Chris Hansen did an elaborate sting operation to catch child predators, who try to hook up with kids over the internet. They arranged for the predators to meet the "kids" at a house, then they filmed Hansen confronting the sickos.
One of the dudes was a doctor, and another was a rabbi who worked with kids! The rabbi at least dressed up for his date, but one dude showed up naked. That was the funniest scene. The creep was waiting butt naked on a stool in the kitchen, thinking a 13 year old boy was about to come downstairs. Then Chris Hansen walks out and he's all "'sup freak, here's a towel." And the dude's like "whaaaaa?" It was great.
It got better. 12 hours after that perv was totally humiliated on camera, he was back on the internet, and got stung again. He went to meet another fake kid at a McDonald's the very next day and there was Hansen, shaking his head. The guy was like, "dude, i was just getting something to eat." Then later he's all "Yeah, I got a problem. I'm seeing a shrink."
By the time they were done, Dateline caught 19 perverts in this sting operation
Catching potential Internet sex predators - Dateline NBC - MSNBC.com
http://www.msnbc.msn.com/id/9927253/