Enneagram

This enneagram test is the only one I've found that agreed with what type I thought I was:
http://www.duniho.com/fergus/enneagram/test/
(it said I was Type 5: The Observer, The Thinker, or The Investigator)

Most other tests said I was a Type 8: The Asserter. Type 8 was a strong 2nd for me on the duniho test as well.

Here's a site with good descriptions of the 9 types: http://www.9types.com/

Here's a good description of Type 5: http://squalor.blogspot.com/2006/01/free-enneagram-test-type-five.html It says Fox Mulder was a Type 5.

And for you Trekkies, here's a list of Star Trek characters' enneagram types: http://enneatrek.homestead.com/
Apparently, I am Data.