A film contest is currently under way on the topic of ecological footprint, ecological overshoot, ecological debt:
www.footprintnetwork.org/index.php/newsletter/det/ecological_deb... .

For some inspiration, you might have a look at
http://ways.org/en/2007/dec/26/1246/mcrosby/story_stuff or
www.cbsnews.com/sections/i_video/main500251.shtml?id=3841669n (unfortunately, with an advertisement preceding the video).