Take the quiz at dicepool.com

The color text amused me:

You are a four-sided die, a d4. Otherwise known as a tetrahedron, a "Caltrop", or (to a lesser degree) "Ol' Pointy". This crap bores you, so I'll get to the point. Others tend to see you as petty, conniving, manipulative, argumentative, defensive, greedy, and needlessly antagonistic. You see yourself as focused, effective, efficient, influencing, shrewd, tactical, and direct. Both points of view are in fact correct. You always know the best way to get things done, a fact that never wins sympathy with others. Whenever you manage to gain control of a situation, your solutions are swift and brutal. Unfortunately everyone else is convinced that granting you such power is, "a bad thing" and often conspire to keep it out of your hands. Such short-sighted fools!

This survey is completely scientific. Despite the mind-boggling complexity of mankind, the billions of distinctly different personalities found on Earth can easily be divided into seven simple categories that correspond to the five Platonic solids, a pseudo polyhedron, and whatever the hell a d100 is. The results of this quiz should be considered not only meaningful but also infallible, and pertinent to your success as a fully realized individual. If you feel the results of this examination do not match your perceived personality, you should take whatever drastic measures are needed to cram your superego back into proper alignment, as described by the quiz results.