Not exactly the keenest observation in the history of observations, but I've noticed a marked tendency for the protagonist and main villain in anime series to be an INTP and an INTJ, respectively. A few examples that come immediately to mind:
Spike Siegel and Vicious (Cowboy Bebop)
Daisuke Aurora and Shun Aurora (Heat Guy J)
L and Light Yagami (Death Note)
However, I have to lodge a disagreement over Picard: he's totally an INTJ! He spends all of his time in his ready room unless needed and is described by other characters as being "a very private man". He also takes all of his leave time for trips focusing on solitude and reflection. Another good example of an INTJ good guy is Admiral Adama. INTJs are the villains so often that it's good to see a few good guy INTJs as well...