I've read the book and just finished watching the movie. I am not a scientist. I have never claimed to be one and frankly don't have a desire to be one. With that caveat, the evidence he laid out was impressive. He addresses the most common arguments against global warming: it's part of a natural cycle the Earth goes through, people can't possibly make such a large impact on the Earth, etc.The book was much more detailed and persuasive than the movie which is unfortunate because I'm sure of the few people who see the movie, even fewer are going to take the time to read the book. At the very least, see the movie. Read the book if you've got the time. (You also won't have to listen to Al Gore's subtly Southern twang for an hour and a half.)
As Rob said, it's a shame a lot of people won't end up seeing the film because it is perceived as "Al Gore talks about global warming" instead of a well-researched and important film on global warming. Yes, it's necessary to involve politics in a discussion like this but it could have been toned down a bit.
Be prepared to endure numerous, self-aggrandizing shots of Gore walking out to wild applause and some bashing of the current administration. Get through that and you'll come away with an important message and a greater sense of urgency about the world you live in and the way you live in it.
The title is perfect. It's exactly what global warming and other environmental issues are. It's about time we did something about it.
