I saw it a couple of weeks ago. Of course in 2 hours it wasn't more than a very quick runthrough of several key points, but all in all, it was very informative. Eve, it is definitely very confrontng when, for example, Gore shows the stats for carbon dioxide levels (which cause the thickining of the atmosphere) for the last couple of thousand years compared to the last 10. Also when he showed what certain mountains/glaciers looked like 50 years ago, and what they looked like now. For example, 50 years ago, Mount Kilimanjaro in Japan was covered in snow. Today, there is barely a few patches scattered here and there over the mountain. In a few more years, there will be no more snow on Kilimanjaro. Confronting, indeed.
I was most ashamed when they were discussing the Kyoto treaty (plans for reducing global greenhouse emissions) and Gore said that only 2 industrialised nations had so far refused to sign it - the USA and Australia. What is worse is that many American states have already ignored the current administration's stance on Kyoto and have implemented greenhouse controls of their own, leaving Australia pretty much the only country to not have ratified Kyoto. Shame Howard

Although I knew this already, it was made all the more poignant after I had seen some of the effects of global warming.
As for politics, of course a few barbs were thrown in, but I definitely wouldn't say it was over the top. More like "the current administration has not done this" etc.
See it - its worth it.