I just watched CNN and saw it cover this new collection that Google has done in collaboration with the National Archives. Google has a way of making news and bringing digitized content into the mainstream. The press release notes that this is a pilot project featuring 103 films from the audiovisual collections preserved at the Archives. No special software is needed.
Google Video includes video of all lengths, free and for sale, from a variety of sources. There is even a way for you to upload your own video (for free) and add it to the collection. At some point, Google hopes to make available to everyone to charge for people to watch their videos. That means that I could upload video of an event and then charge people to see it. (I wonder if a rating service will be in the works, so people know if the video is worthwhile?)