The TVI (Taxonomy Views Integrator) module allows selective overriding of taxonomy terms and/or vocabulary with the view of your choice. Using TVI you can easily create custom views to output all terms in specific vocabularies.
TVI will try not to interfere with views or taxonomy/term page displays if no TVI views exist for the current page request.
This module, in concert with either Case Tracker and/or Workflow modules, allows you to set up groups who are notified on a regular basis of all items in a set of (user-determined) states. This module is Organic Groups aware, and was originally developed to integrate with pingVision'sOpenAtrium site. (Organic Groups is not required, however.)