Then there is the science survey that asked whether the earth orbits the sun (or vice versa), which more than 25% of Americans supposedly got wrong. Surprisingly, not many more supposedly got it right in the other countries it was asked. E.g. 34% in the EU supposedly got it wrong.
I'd like to think the survey was flawed, but if it was conducted by the National Science Foundation (at least in the US), you'd think they would know what they were doing.
I know this is getting away from Blu Ray players……but if your interested take a look at / try the questions yourself :
http://www.businessinsider.com/national-science-foundation-survey-2014-2P.s. Not to get into religion / politics, but it's interesting that according to the NSF web page, when the words "according to the theory of evolution" were added to questions 7 & 10, the % of right answers increased a lot, showing that many more were aware of the answer, but personal religious beliefs changed the response, something the media didn't report on, but which shows that the way questions are asked / designed can have a major influence in the results.