Set up a Sonar server and integrate it with the build server.
Test coverage reports
All sorts of code metrics.
while I'm basically not against the idea I'm not quite sure if it's worth the effort. Most code metrics could be generated quite easily locally; I'm not convinced that we would win that much having a dedicated server for this information (especially if thinking about maintaining it...). I think it's as likely to look at the sonar report as to generated coverage reports, checkstyle reports, ... locally; but just my 0.02€.