yes, I'm writing a web-based one that tracks your miners over time and reports on their stats. It currently supports Slush's pool but I am writing API connectors for BTCguild and Deepbit as well.
Download here via SVN: http://code.google.com/p/minerwatch/
See my miners here: http://minerwatch.strangl3r.com/
I am currently only graphing with sparklines but the first release will have a separate tab for analytics that have big graphs with timelines and all the fancy regular stuff you would expect from miningmonitor.com type of app. Stay tuned for more.