I was tickled to learn that Oscar the Grouch from Sesame Street has been tapped as the official "spokesperson" for Canada's 2008 Waste Reduction Week. According to their website, Waste Reduction Week focuses on "education, engagement and empowerment" by pointing out the "environmental and social ramifications of wasteful practices." (Or, in other words, think before you pollute.) My favorite was their Activities page, which gives directions for building a composter, making recycled paper, and helping you conduct a home energy audit.
Not in Canada? Check out Oscar's public service announcements on the September 18, 2008 entry of The Muppet Newsflash.
[Updated 10/16/09: Fixed two broken links.]