I did these tests when I worked at Olin corporation in Tennessee, and ended up with several differing results. I think they might have "mood swings" because you answer the same questions differently on different days. We took them months apart, so you wouldn't necessarily remember how you answered the question the last time you took it.

My results were ENTJ the first time, INTJ the second time, and ENFP the third... pick one. "Type talk" was an interesting book, but trying to run the world with it makes you crazy. People try to approach you (or situations with you) based on what they think your "type" will do, and if life has taught me one thing, it's that people are inconsistent... Personally, I think there's some degree of everything "type-like" in everybody. Maybe the "concentrations" change with the phases of the moon...

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What man is a man that does not make the world a better place?... from "Kingdom of Heaven"