It was brought to my attention that some of the videos aren’t showing up on the site (thanks Stephen!). I think I know the problem, but may not have time to fix it right away. I am guessing that I need to update my database of all the videos. There may be some discrepancies between YouTube’s data and mine. I had planned to setup a cron job that would run to update the database weekly. I forgot
So IF you get an error on this site and want to watch the video, it IS still perfectly accessible on YouTube.com.
(maybe I will make a video on CRON jobs too!)