I made a three minute video about lakes disappearing from Google Maps satellite photos and a rainy day in Copenhagen for Climate Change TV. Check it out.
If you like it, head over to the competition website and vote for it, please.
I haven't had the time to watch all of the other videos yet. But among those I have seen I'd mention The world has malaria (especially the Kenya crew from TH!NK3 should watch that one) and What happened at COP16? Got another favorite? Let me know and I'll check it out.