http://www.personalitytest.net/cgi-bin/q.pl

EI: 9 out of 17
Extrovert |-------------------------------------------------| Introvert
                                   |
                                  52%
SN: 10 out of 17
Sensation |-------------------------------------------------| iNtuition
                                      |
                                     58%
TF: 7 out of 17
Thinking  |-------------------------------------------------| Feeling
                             |
                            41%
JP: 9 out of 17
Judging   |-------------------------------------------------| Perceiving
                                   |
                                  52%

Your Personality type is INTP

http://www.personalitytest.net/types/descriptions/index.htm

INTP: "Architect". Greatest precision in thought and language. Can readily discern contradictions and inconsistencies. They are good at logic and math and make good philosophers and theoretical scientists, but not writers or salespeople. 1% of the total population.