You should check this out (if you haven't already)

I don't remember which MySpace blog it was that told me about this link, but if you click on it, you can view An Inconvenient Truth for free; it's in two parts, which are navigable by use of the pull-down menu at the top of the page.

I'll admit to being more than a little skeptical about a documentary starring Al Gore and which was about a topic that has been questioned on more than one occasion. After watching it, however, its message rings true to me and I strongly recommend that you view it -- either via the link I provided or by actually contributing to the economy (i.e., going to the theater or renting the DVD via Netflix or whatever other purveyor you so choose).