Coder Tough Love is a companion to the existing Coder module by Doug Green, and its initial development has been sponsored by Trellon. Unlike Coder, which strives to follow the documented style guidelines of Drupal core, Coder Tough Love takes the tougher tactic of applying finely aged and obsessively anal wisdom from years of Drupal development and persnickety quality control.
Part of the reason for this module's creation was to obsess over my own code: I claim no higher standard than myself, but even I am infinitely fallible. Likewise, as chx and I wrote Drupal Tough Love reviews, we found ourselves repeating suggestions from module to module, and a few of our critiques could have been automated, leaving us to focus on more important design issues. You should expect some false positives with Coder Tough Love, but I'd still want you to report them as bugs so I can continue to tighten the analysis.
Hit the project page for a quick list of the shipped rules, or the README.txt for specific details.