As of today, there are 40 members of the extended CLR team with blogs on and off of MSDN.  Some are more active than others, but if you're looking for a blog that might cover a specific area, here's some places to check out.  Note these are categorized more or less by what people work on around the team, but we all have other interests as well, so each person's blog may not fit completely (or at all) within their specific category.  As the team adds new bloggers, I'll try to keep this list as up to date as I can:

CLR Bloggers [ OPML ] (Last Updated: 06 OCT 05 16:52 PST)