Perhaps the writer of this article would also like to quote the comments of the British High Court regarding "An Inconvenient Truth".
In case he is not aware of them or is not prepared to quote them I give them here -
The court referenced nine things that "An Inconvenient Truth" distorted or blatantly lied about, noting countless other areas where they felt falsehoods may also exist. The court concluded that there are very credible scientific views that dispute Gore's premise that humans are causing global warming.
In addition the court singled out Gore's ecoalarmist assertion that sea levels may rise 20 feet in the forseeable future due to the Antarctic and Greenland ice melt, and that people are already evacuating Pacific island nations due to the sea level rise. That statement is a bald-faced lie.
It should be noted that Mr Gore refused to comment on the British High Court's decision.

Talking about the truth maybe one should look at this video:
http://www.netro.ca/disclosure/npccmenu.htm

Fairgo

In the interests OF a fair go, you also might have included the following tidbits from Justice Burton's findings, in as much as:

(excerpt from http://business.timesonline.co.uk/tol/business/law/corporate_law/article2633838.ece)

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He agreed that Mr Gore’s film was “broadly accurate” in its presentation of the causes and likely effects of climate change but said that some of the claims were wrong and had arisen in “the context of alarmism and exaggeration”.
..
Despite finding nine significant errors the judge said many of the claims made by the film were fully backed up by the weight of science. He identified “four main scientific hypotheses, each of which is very well supported by research published in respected, peer-reviewed journals and accords with the latest conclusions of the IPCC”.

In particular, he agreed with the main thrust of Mr Gore’s arguments: “That climate change is mainly attributable to man-made emissions of carbon dioxide, methane and nitrous oxide (‘greenhouse gases’).”

The other three main points accepted by the judge were that global temperatures are rising and are likely to continue to rise, that climate change will cause serious damage if left unchecked, and that it is entirely possible for governments and individuals to reduce its impacts.
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Is 'An Inconvenient Truth' a political film- yes
Does it over hype some of it's claims- probably
Does it effectively raise awareness of climate change- definitely!

As Justice Burton concluded, there is very little scientific doubt about the reality of climate change. The only areas of debate center around how bad it will get.

And as for the relevance of climate change to the Peace Prize? As I see it, climate change will impact agriculture, water resources, livestock. This is likely to force major displacements in human population. As there aren't too many places left, that means we are likely to see clashes of desperate people and the resulting wars are going to be devastating for everyone.

The more we can do now, the better for everyone. If motivating that action takes a little exaggeration and a little over-hyping then, personally, I don't have an issue