Although the only mentions I've seen of this tv-series on MBTIc have been short and negative, I hope at least one or two of you have recognized its greatness.
I only found out about this show a few years ago when I and my siblings bought the DVD for my dad. Now my entire family loves it. I'd expect a lot of you to do the same as it's extremely "N".
Anyway, here's my list of some of the characters:
ENFJ- Leland Palmer, Audry Horne
INFJ- Sarah Palmer, Annie Blackburn
ENFP- Laura Palmer, Lawrence Jacobey, MIKE, The Giant
INFP- Harold Smith
ENTJ- Dale Cooper, Thomas Eckhardt, Benjamin Horne
INTJ - Albert Rosenfield, Windom Earle
ENTP- Jerry Horne
INTP- Tommy “Hawk”
ESTJ- William Hayward, Garland Briggs, Dick Tramayne
ISTJ- Cathrine Martell
ESFJ- Donna Hayward, Norma Jennings
ISFJ- Shelly Johnson
ESTP- Harry Truman, Bobby Briggs, Leo Johnson
ISTP- Ed Hurley, James Hurley
ESFP- Andy Brennan, Lucy Moran, Pete Martell, Nadine Hurley, BOB
I won't easily change my mind on some of the characters, but this is still a pretty rough list based on sometimes vague memories. It really needs a second opinion. And please add characters if you can.
Useful Wikipedia character list with short description