Blake Handler sent me a link to his blog post about free Windows software a couple of days ago. It is a very cool list that shows a lot of free things published by Microsoft. Check it out at: http://bhandler.spaces.live.com/blog/cns!70F64BC910C9F7F3!1231.entry?_c=BlogPart.
Note that for some reason the Live blogs put you at the bottom of the post instead of the top when you click it. Scroll to the top to see the list.