Local IIS is also handy for testing out certain permission-related issues, since the built-in web server sort of runs as you (I say 'sort of' because of a long story I'm not going into right now, but ...
Part of our response to the Code Red fun as of late, is that I am trying to create an SMS package that will auto-deploy the IIS Hotfix checker to any machine that it detects is running IIS. (This is ...