A science teacher posting on the Bad Astronomy forum
describes an experiment in which he polled his students to find out how many of them believed humans had walked on the surface of the moon -- before and after watching the Fox TV documentary "Did We Land on the Moon?"
I began by asking my students (9-12th graders taking earth/space honors) the simple question, "Do you believe that humans have walked on the surface of the Moon?". Initial results were 81.0% "Yes", 7.6% "No" and 11.4% "Not sure" (sample size 105 students).
Then I showed them a DVD I have made of the infamous FOX show (thanks to Jim Oberg who helped me land a copy of the video tape when my own was "mysteriously" partially taped over). I converted to DVD so I could knock out the 18 minutes (!) of advertisements and break the segments up into easily accessible chapters. I showed the video completely through without comment and asked the same question. This year, the "after video" results were 50.8% "Yes", 21.3% "No" and 27.9% "Not sure" (sample size 122 students).
So belief in the moon landing dropped by 30% after watching the Fox documentary. Thankfully, he didn't leave his students in a state of disbelief. The next day he showed them a powerpoint presentation rebutting every point made in the show:
I made sure to cover every single topic and then I asked the question a final time. The final results this year were 92.9% "Yes", 2.0% "No" and 5.1% "Not sure" (sample size 99).
It's no wonder so many people believe in bizarre conspiracy theories and the paranormal. They watch all these shows on TV and never hear a reasoned rebuttal from someone who knows what they're talking about.