Some Multimedia sites from Microsoft. A few notes:

Webcasts
I’d written about webcasts before. It appears the site is searchable and they are also working on an RSS feed.

.Net show
A talk show covering Microsoft technologies. I recently watched the long but interesting episode on Smart Clients. If you are looking for a demo of VSTO you can fast foward to the 1:13:30 mark in the movie for a 15 minute Excel demo. I really like the way VSTO automatically converts named ranges to objects.