There seems to be somekind of growing trend amongst new documentary makers to not research their facts and when presented with facts, reinterpret them to fit their sensationalist viewpoint.
The first one of these I seen was Loose Change (you can watch it from this page) which does the whole Bush ordered the terrorist attack on the World Trade Centre in New York thing. Certainly if you are someone that believes Georg Orwell's 1984 vision of the future will come true, then you will find complementing viewpoints in this documentary.
The truth of 9/11 is that terrorists hijacked some planes and in acts of Jihad gave their lives to their hatred of America and possibly the west in general. If they hadn't done that America probably wouldn't have invaded Afghanistan, invaded Iraq and Bush probably probably wouldn't have been re-elected.
The second false sensationalist documentary that I knowingly seen was in February this year on Channel 4. It was called called The Global Warming Swindle which states that global warming is a natural phenomena and that Humans are not effecting the earth's climate in any significant way.
The Independent and then The Times where the first to call this one BS and I am now wondering why Channel 4 allowed it to be shown as charts in the documentary have been altered and people have been misquoted (film enough footage of someone speaking and you can do that). The truth is that the earth is getting much warmer and we are causing it. This can be reversed by using low energy compact florescent lightbulbs, by ridding ourselves of our dependency on oil and not protesting politicians that are doing the right thing. Until then the climate is just going to keep getting worse, probably won't mean the end of humanity, but enough people will suffer before it is over to warrant immediate action.
On a side note, nobody ever talks about the success of the Montreal Protocol which was the international effort to save the Ozone Layer. Now Ozone Layer should be repairing itself over time (the first detectable signs will possibly be in 2024), but the replacement gasses we now use instead of CFCs are still greenhouse gasses and so contribute to our current crisis, global warming.