Stream Silverlight apps in your blog created with Live Writer...
Here is a cool plug-in for Live Writer from James Clarke (http://www.clarkezone.net/default.aspx?channelid=fe2866cb-00b9-4bff-bb11-1b3a88708a84).
Notice I can now just select "Silverlight Streaming Application" from the Insert menu option.
If you have a Live ID (or wish to create one), you can get up to 10gb of FREE space to host your Silverlight videos/apps at http://silverlight.live.com. When you create an account here you will receive an Account ID and Account Key (required for the following step), be able to upload your Silverlight video/apps, so you can reference insert them as follows:
If you have entered your Account ID and Account Key, then select the Refresh button.
Pick your Silverlight application and click Ok.
Oh, BTW... if you are looking for a super cool tool to record your screencasts, check out Community Clips at http://communityclips.officelabs.com.