Of the many documentaries I've watched lately, I am happy to say that The 11th Hour is the first that doesn't leave me feeling depressed, powerless and frustrated afterward--quite the opposite actually.
The 11th Hour gets its points across with the help of some very reputable interviewees and some sometimes very graphic footage. At points, I was on the verge of tears. However, the solutions section of the film was inspiring. It is this aspect of this film that makes it the best of the modern environmental documentaries I've seen. I felt relieved that even despite the bleak picture painted (and trust me, it was BLEAK!), there really ARE things we can do to reverse climate change. They are manageable, not impossible, and effective.
One scientist in the film made a very poignant point in particular: rather than lament this time we are living in as the end of civilisation as we know it and feeling the burden of the responsibility to "save the planet", we can instead choose to feel LUCKY to be born in a time when our creativity is called upon to completely reinvent all the man-made systems in place on Earth. What a privilege to be born in the generation who successfully turns things around!
The first step is to raise awareness. I suggest you buy or rent this film, invite all your friends over and watch it together.