I don't think there is much to say about YouTube, since most are so familiar with it. It is one of the oldest, biggest, and most powerful (owned by Google) services out there. We can thank YouTube for the term "viral video" becoming a part of our everyday lexicon. You can watch just about anything on YouTube, but the site isn't necessarily the best place to meet your feature film needs. Since the YouTube revolution began with user-uploaded content, this is still the focus of the site. Of course, you often find documentaries and feature films uploaded to the site - sometimes to only discover their removal a day or a week later due to copyright restrictions. I find that YouTube is a great place to visit to find that obscure "Dan Rather piece on cigarette legislation from the 1980s" or that "Malice at the Palace footage from 2004." YouTube has now shifted to offering pay-per-view movies, but it will still likely remain the place to view just about everything... from the profound to the absolutely mundane and absurd.