NOW I KNOW WHY OUR GENERATION IS SO SARCASTIC AND CYNICAL
The Sorting Hat of Harry Potter and Myers-Briggs Personality Typology
MB personality type and Jungian functions matched up with Hogwarts houses.
EDIT: I took a screenshot from what turns out to be this source not too long ago and forgot to give credit to aroomofrequirement.wordpress.com . Sorry about that - credit should be given where credit is due. Thanks also to sleepyturtlechoir, who pointed this out.
EDIT EDIT: Hyperlink issues at the moment. Source is http://aroomofrequirement.wordpress.com/2012/12/03/the-sorting-hat-of-harry-potter-and-myers-briggs-personality-typology/ and sleepyturtlechoir pointed it out http://sleepyturtlechoir.tumblr.com/post/100179064611/intj-confessions-intj-paradigm-pantsagon