A couple of months ago my colleague Carmen pointed me to Embedr, "a free service that lets anyone create a custom playlist of videos from the top video sites on the web." Finally had a chance to take a look at it and quite like it. Basically you can feed it the URLs of videos across the following video sharing sites: Atom Films, Blip.TV, Bragster, Break.com, College Humor, Dailymotion, DivShare, Edublogs.tv, Metacafe, TeacherTube, Google Video, MySpace Video, Vimeo, YouTube, or you can build a smart playlist from YouTube only that will automatically update based on keywords, categories, regions, YouTube usernames, etc. That would be a really quick way to keep a current list of all your library's screencasts in one spot on your library's site!
Here's an example I grabbed from the public area of the Embedr site: