In particular, this one: http://news.ycombinator.com/item?id=1992756 http://news.ycombinator.com/item?id=1992756 has a link to a blog post by the guy that made

In particular, this one: http://news.ycombinator.com/item?id=1992756 http://news.ycombinator.com/item?id=1992756 has a link to a blog post by the guy that made the video with some of the background on that, which is particularly value-added.