Also, check out Sonar, which combines many of the other tools and provides a nice view for it too.
rules from Checkstyle, FindBugs, PMD, Clirr, fb-contrib.
Not sure exactly how to add it to a post-commit hook, but http://docs.codehaus.org/display/SONAR/Analyzing+with+Maven might be a good starting point (especially if you're using maven).
Maybe even consider using one of the approaches listed in http://docs.codehaus.org/display/SONAR/Continuous+Integration since it seems that you might be trying to look for better tooling for your whole team ("Though some subset of those features would be better that what we have now - nothing!"
