Today I was so bold as to cram all the developers on my current project (there are four of us) into a small conference room during the lunch break and show them a screencast about agile development from dnrTV while we enjoyed our food. It was a fun little experiment and I think they appreciated the initiative, but the dnrTV videos are usually one hour long which, it transpires, is a bit too much. We have short lunch breaks, okay?

Does anyone know of other good .NET related videos that we can showcase? I'm thinking of Channel 9 as well, but what more is there? I'm looking mainly for C#, ASP.NET and agile stuff like TDD and so on. And a length of 30 minutes would be soup-erb (food related pun intended).