Very cleverly done!
Wow... it would appear as though this animation has attracted some controversy, no? This is usually the sign of a very good theme in such an animation that it can cause so much thought and debate.
Well, aside from that, the things that I enjoyed the most were the characatures of the G8 leaders. (The one of Paul Martin I thought was especially clever, but honourable mentions go to Jaques Chirac and Tony Blair). Anyway, they were extremely accurate and they illicated a chuckle. ("Animal Farm", anyone?)
Now, while I will agree with some that the message is quite preachy, I also agree that you raise a valid point: pollution and ecological disasters ARE a problem. After all, is that not why the G8 met in the first place?
Anyway, before I write a complex essay, I should conclude by saying that this is the definition of what gives an internet animation it's quality: evident effort, high(er)-brow humour, and a unifying message. Thank you for sharing this excellent work.
-Danish Sabreur