Two videos worth watching

I'm working on trying to plan a math project related to garbage and recycling. I'd love to do something with plastic bags. Any ideas? Here are two amazing videos I'd like to incorporate into my lessons:

Our Our Synthetic Sea is about 10 minutes.

The Story of Stuff is getting a lot of attention. Here's a teaser, but you can watch the whole thing at The Story of Stuff.

I'd love to hear your ideas for the project and lessons..... in fact, I've written my lesson plans and so if you want to take a look email me at mathjosi@yahoo.com