Most commonly I test as INTP and INFP (still trying to debate which type I am!). However once I tested as ENTJ but that type is definitely not me, so I think there was something wrong with the test (or my answers).
ENTP, INTP, ENFP, ENFJ, and even ENTJ once have all come up, ENTP seeming the most common. I think actually I can probably test as any intuitive type, more or less, depending on what kind of mood I'm in and how I choose (intuitively) to interpret the mostly rather loaded questions. None of this alters the fact that I know what type I am perfectly well, however, and am not likely to change my mind about it any time soon, as whatever I actually test as it's the only type description that fits me at all. If it wasn't for the fact that it would make his ego grow to world-shadowing proportions, I would mention the fact that Jack's short test is the only one that I have seen that I think would be able to get my correct type consistently. But I think we all know that Jack doesn't need his ego puffed, particularly by people like me who make tasteless comments about his beloved home state
Sometimes I get ENTP, depending on the mood I'm in! Basically, the more the P-J divide is based on being orderly, the more I test as P; when some questions on "punctuality" and "organization" are added - or, even better, are prominent - i test more as J.