I thought An Inconvenient Truth was a lame movie...

and never bothered even giving a billboards a second glance. But a friend of mine "forced" me to sit through it and its kinda like a huge eye-opener. Politicking aside, since Gore can ride on the movie's popularity for a comeback, it's a well-researched and pretty accurate description, and frightening prediction, of global warming and its consequences.

Highly recommended for viewing.