The video was created to generate support for a bill before the California legislature which will ban single-use plastic bags, limit distribution of paper bags, and encourage the use of reusable bags.
More information is available at Heal the Bay.
Via Nothing To Do With Arbroath.
http://www.misscellania.com/miss-cellania/2010/3/24/plastic-bag.html
But I was wrong...
"It's a plastic bag caught in the wind! Do you have any idea how complicated your circulatory system is?!"
Yeah...I need to watch more movies :P