WPMU network stats?

I'm looking for a plugin that can update my dashboard "Right Now" settings to reflect that information of my entire network. For example, instead of just displaying my total number of my posts, pages, categories, comments, etc.. it will have the totals from my network on there. I'm running WPMU 3.0.1. This would be convenient from a Super Admin perspective so that I can see the growth of the site. Is there a plugin that supports this capability??