It took me a while to finally get around to seeing "An Inconvenient Truth" but I finally did. Al Gore does an amazing job with the presentation and the facts of global warming. If you have ever felt overwhelmed at how to present a complex topic to an audience not well-versed in your topic, I recommend you see Al Gore's film. He did an awesome job using humor, video, pictures and yes - charts and graphs - to get his point across.
BTW - Here's a link the New York times review of the movie.