WPMU template usage counter?

I am looking for a plugin, which is showing how often templates in an WPMU installation are used each. I need this for my WPMU Community site so that I can remove and replace templates that are not (or seldom) in use and may be of more interest of my members.

A a pro version it would be interesting to see, which members use every single template.

Does any one know such a plugin and where I can find it?