A fellow VSTO team member, Ade Miller, is blogging about Agile methods, scrum, etc.

Ade has been scrummaster on our dev team as we have been experimenting recently with some of these ideas in our VSTO 3 development work.  Ade is also responsible for some VSTO features like ServerDocument and the LCIDProxy so hopefully he'll give some insight into those features as well (hint hint).  Check it out.