[Uberfuhrer]

Well, we had fun with determining real-life NTs, but I think it's even more fun to discuss fictional NTs. So I'll start:

Peter Parker/Spider-Man, Spider-Man - INTP, maybe INFP

Frank Castle/The Punisher, The Punisher - INTJ (not impulsive enough to be an ISTP)

Bruce Banner, The Incredible Hulk - INTJ

Tony Montana, Scarface - ENTJ, maybe ESTP

Sherlock Holmes - INTJ

M, James Bond movies - ENTJ

Q, James Bond movies - ENTP

Most James Bond villains - xNTJ

Mr. Burns, The Simpsons - INTJ

Tyler Durden, Fight Club - ENTP

Doc Emmett Brown, Back to the Future - ENTP

Professor Snape, Harry Potter series - INTJ

Bruce Wayne/Batman, Batman - INTJ

Spock, Star Trek: TOS - INTJ (some say ISTJ, but I'm not sure)

Jean Luc Picard, Star Trek: TNG - ENTJ

Data, Star Trek: TNG - INTP