As a follow-on to the last screencast (about how to do a screencast), I've created a screencast that takes that screencast, uploads it to Silverlight Streaming, then uses the instructions on Catherine Heller's blog to embed the resuling Silverlight application into my blog using an iframe. In addition to the strange hall-of-mirrors effect of making a screencast about screencasting, you'll probably notice that I did this screencast in three parts: encoding, ZIPping and uploading, and testing and embedding. That was mostly to spare you the time it takes to encode a file and the time to upload a file.
One thing to note: for both this post and the previous post, I cracked open the StartPlayer.js file and changed the autoPlay property to false. Otherwise you got two videos playing when you hit the main page of this blog.