Hmm, well, that all depends on the type of project. Certainly, some common project metrics (as in, "is the PROJECT successful") would include:
-were tasks completed on time?
-were deadlines and milestones met or exceeded?
-any kind of satisfaction surveys among the customers or even the project team members
The question of product metrics ("OK we finished the product, is the PRODUCT a success?") varies greatly based on the type of product. Some common metrics would include:
-help desk calls (if s/w)
-defect to good unit ratio
-customer satisfaction (before and after, if a comparison is possible)
-efficiency metrics (time it took to perform a task before and after the project), common in self-service tool rollouts
And so on.
Thoughts?