I've always had a "thing" for personality tests and quizzes. My first livejournal had, in addition to pages of emo teenage whinging, hundreds of little quiz result widgets. If I were a book, I'd be Hamlet. My element is Water. I'd be the Bubonic Plague. Etc.
Eventually I came around to legitimately taking a personality sorter, and I found myself at the college career center taking the Myers-Briggs Personality Sorter. The test itself was suspiciously straight-forward and a little too much on the black-and-white/yes-or-no side of things, but reading the interpretations has been utterly fascinating. With most of these things, you can find pieces of yourself in just about every description. With this one, though... there's a definite sense of being more some than the others.
I don't know of any particularly good online tests for you to take if you don't already know this, but I do know the results are pretty consistent so long as the test maker used questions as close to the original (which you usually have to pay to take) as possible. My results, at least, have shown very little variance.
So....
I'm
INFP, weak on the F.
What're y'all?
ETA:
The Personality Page has some of my favorite interpretations.