( CNN ) -- What could be more powerful than the tears of a Native American Indian ? Wax on , wax off : Does it make you want to save the rainforests ? Iron Eyes Cody was the face of the Keep American Beautiful campaign of 1971 whose tears marked the plight of the environment , but more importantly kept the problems of pollution in the minds of millions . From teary Native Americans to witty skits or doom-ladened eco-horror scenarios , the environmental campaign video then has long been a powerful tool for environmental groups to spread their message and raise pubic attention . The rise of YouTube and other video sharing web sites has now meant that individuals can broadcast their own eco-awareness messages and form their own social action networks . But what makes a good video and how much impact do they have ? Is it better to be funny or shocking ? When you see Harrison Ford getting his chest waxed , do you immediately think about saving the rainforests ? Or does the sight of celebrity pontificating about the plight of the environment make you want to watch their next film rather calculate your carbon footprint . We 've featured three different videos that we like and want to know which ones you think are the best . Watch the featured videos » . Let us know which eco videos have got you going by using the Sound Off box below . Or , e-mail us at ecosolutions @ cnn.com . We also want to feature your own environmental videos here on CNN 's Eco Solutions . Use the iReport form to send in your film and you could find your environmental efforts make even more impact than Harrison Ford 's chest .
Nominate your favorite environmental campaign video . Rate our featured videos , including Harrison Ford getting his chest waxed . Send in your own videos using our iReport page .