The beauty of the Myers-Briggs is its simplicity, really. There are tests that can more or less accurately boil it down to four questions. If you are self-aware enough, you could type yourself by reading the descriptions of the 8 components -- are you I or E, etc.
So, on a whim, I took the MMPI-2, a monstrosity of 550+ T/F questions. The results are hilarious, mainly because I cannot see myself ever being required to take this test and so the context of the interpretation is overly dire and serious.
Apparently I may have very deviant social, political or religious convictions and/or may manifest clinically severe neurotic or psychotic disorders, yo. Watch out. <_<