I'm currently involved in a project that is sort of unique.  It's for a multi-billion dollar company.  We threw out requirements, specs., milestones, etc.  I am in daily contact with supervisors, plant managers, logistics co-ordinators, I.T. managers, network gurus, shipping clerks, and on and on.  Everybody from CIO and CFO right on down to people on the production floors, in the warehouses, and on the docks.

It's cool.  Way cool.  If I need something they stop and send it to me.  Likewise when questions come up I stop and dig it to the bottom.  Success?  Oh yes.  Finished?  No where near.  We are constanly making adjustments to a system of sub projects that is in production, on line, and darn near real time.  The list of enhancements to come is a book.  Only one volume so far.

Measurement?  We ask the users, "Is your job easier than last week?"