http://i.snag.gy/aWtBX.jpg
Printable View
Other "personality" curves plotted on WolframAlpha:
http://i.snag.gy/dddWM.jpg
Selecting one from those listed:
http://i.snag.gy/7tLCj.jpg
Some people have FAR too much time on their hands
Batman [Bat-face] curve anyone?
http://i.snag.gy/EmoCh.jpg
Other character based plots/curves:
http://i.snag.gy/HkyHI.jpg