This research explored whether viewing documentary films about the natural or built environment can exert a measurable influence on behaviors and perceptions. Different documentary films were viewed by subjects. One film emphasized the natural environment, while the other focused on the built environment. After viewing a film, a computer game assessed environmental identification. Finally, subjects took part in a charitable donation activity in which they could contribute to either of two causes (helping dolphins or a fund for bridge rejuvenation). Results yielded significant differences in subjects' environmental perceptions and on the donation task. Findings are discussed as well as implications for future research in environmental communication and conservation.