iPersonic - free 4 question personality test with amazingly accurate results. FYI, I'm a Spontaneous Idealist! (which matches quite well with my assessment as an ENFP in the next test.)
Jung Typology - free 72 question personality test which, again, produces amazingly accurate and insightful results. Besides just listing all your good qualities, it also explores your type's weaknesses, which is a great opportunity for self-awareness and growth. (I'm an ENFP!)
How well do you see color? (a test to find out if you have any color blindness... I scored a 3!)
What is your true color aura? (I got red!)
Know of any other great quizzes for me? Share 'em in the comments!