Director Randy Olson's Sizzle: A Global Warming Comedy has already shaped the agenda and framed the discussion among scientists and the science media, a key impact of a successful documentary film. I haven't had a chance to weigh in yet on the blog debate that has been raging over Sizzle . Needless to say, it's already one of the most talked about science-related documentaries of the year, even though very few people have actually even seen it. I will be writing a column about the film for Skeptical Inquirer Online , so stay tuned. In the meantime, here's something that will likely interest some readers. I'm co-editing a special issue of the journal Mass Communication & Society exactly on the topic that has had so much of the blogosphere buzzing: understanding the forms, functions, and impacts of the many emerging sub-genres of documentary film. Details on the special issue are below. Read the rest of this post... | Read the comments on this post... ...