WWW.41Q.COM is an interesting site. It is actually a free personality test comprising 41 questions to know your personality type. The 41 Questions survey questionnaire is based on Myers-Briggs/Jung typology, which is a personality test designed to assist a person in identifying some significant personal preferences. Katharine Briggs and her daughter Isabel Myers developed the indicator during World War II, and its criteria follow from Carl Jung's theories in his work 'Psychological Types'.
After giving the test, the results list out your personality type (in detail), ideal career options, as well as a graphical slider which gives you an indication of your personality. You can e-mail the results of your personality test to your friends and also provide link to your test results on your homepage/blog.