Captain Kirk's Yetzir HaRa and Yetzir HaTov

Have you seen the original series Star Trek episode called The Enemy Within? Kirk gets split into two separate Kirks due to a malfunction with the transporter: one Kirk is the sweetest guy imaginable, but with no willpower. The other Kirk has all the will in the world, but he's a scary bastard.

(Ok, ok--it's not a subtle episode. It kind of hits you over the head with a hammer to make it's point...)

Apparently, I'm not the only Jew to notice that this is a perfect example of what might happen if a person lost either his yetzir hara (evil inclination) or yetzir hatov (good inclination.) This article by David Holzel takes a look at the parallels...