Arachnophobia

Biodiversity/Importance of Rainforests: The opening scene a couple of minutes in shows the scientists fogging a tree in the rainforest to collect specimens, looking for new species. In my Zoology lass in college we learned about Terry Irwing fogging trees in Panama, and increasing the estimate of species. This scene is awesome though you may need to preview it and determine when to turn it off, because there may be a moment later in the scene that is too intense for you students.