Ah, to combine two obsessions of mine...
For those of you NOT familiar with MBTI, it is a way of understanding where people get their energy from, make decisions, process thoughts and feelings, and order priorities. Two excellent sites (one with two tests for discovering your type) are here:
http://www.keirsey.com/ -- this site has two tests for determining your type and temperament
http://www.personalitypage.com/portraits.html
See here: http://www.personalitypage.com/info.html for a nice overview of the theory and such.
Anyway, I've been wondering if I could roughly guess what types our Six Friends might be. Here goes:
Monica: ESFJ Phoebe: INFP Rachel: ESFP Joey: ENFP Chandler: IXTJ* Ross: ISTJ**
*Chandler gets an X here because I don't see a lot of leanings one way or another in this area. I would guess mild N or S, with some ability to switch.
**Ross, in the last couple of seasons especially, has really been doing more "P" than "J" activity in his personal life; the J here reflects the character as we were introduced to him and his line of work.
FWIW...