I haven't seen Al Gore's An Inconvenient Truth so I'm in no position to judge the film. I can, however, judge a review I read today which, as far as I could tell, was reviewing Gore's politics rather than the film itself. It's a bit like giving Star Wars a bad review because you don't believe there was ever life in a galaxy far, far away. Having said that, it'd be just as bad as someone gave An Inconvenient Truth a good review simply because they believed in the message.