Tonight, the office doors at Dunder Mifflin finally close.

NBC's "The Office" has achieved something that most sitcoms won't, and that's staying on for nine seasons. Over those nine seasons the show has made cast members Steve Carell, Mindy Kaling, Rainn Wilson, Ed Helms, Craig Robinson, Jenna Fischer and John Krasinski into household names.

All have enjoyed success outside of "The Office," but like most work environments, the heart of the show was made up of its supporting cast. It’s those characters that dedicate themselves day in and day out to their trade.

The characters of Kevin, Creed, Kate, Oscar, Phyllis and Angela make up that support system that was needed to complete "The Office" and make the company and show so good.

I had a chance to talk to Angela Kinsey who has portrayed accountant Angela Martin on NBC's "The Office" for the past nine seasons. In every office there is going to be a cat lady and someone that needs to plan the parties!