There is no option for which user levels to exempt from stats tracking at the single site's options page:
With Google Analyticator ( http://wordpress.org/plugins/google-analyticator/ ), you can choose all user roles to exempt and how to exempt them (e.g. remove stats entirely).
This lets the stats not get skewed by Admins and Editors browsing their own site and the pageviews go through the roof.
Please add this option. Maybe even add network-level option for excluding super-admins and for setting defaults for single sites.