IF you are looking for a site to help students make informed decisions, or for them to learn how to present both sides of an issue procon.org is a great place to start. The site takes controversial topics and presents a very thorough argument for many sides of the topic. It also provides an overview that is less detailed that students can use as a quick conversation starter.
Great extension of using a video in the classroom. I love the idea and hope others will offer their thoughts. Check out Angela Cunninghams discussion http://contentliteracy.ning.com/profiles/blogs/using-technology-in-the in the Content Literacy Ning