Looks great! We use and love ServerDensity (http://www.serverdensity.com). They just released an amazing looking MongoDB monitoring plugin as well (http://blog.boxedice.com/2011/02/15/mongodb-monitoring-dashb...). Any idea what your pricing will be?
I believe I have your email address. I'll keep you posted.
And really... thanks for the compliment. We weren't so sure about it :)