Install:
Copy to your Mod folder in your civ4 game directory

What?
This mod adds the Bananas leader trait, the Bananas trait has the following bonuses:
Starts with a sacred Banana Plantation within a city radius of the settler.
Cities gain +1 happiness for EVERY banana resource you have!
Grocers are 50% cheaper.

Monty (of the Aztecs) is now Bananas and Aggressive.
Isabella (of the Spanish) is now Spiritual and Bananas.

Why????
Um.... because it's there? Oh wait, that's why people climb mountains. I'll try again:
Because it wasn't there, and it should be! So I made it!

Huh?
7% of people voted for Banana as the strongest trait. That beats Aggressive, Expansionist and Organized!
Statistics never lie.

How?
I used the inheritance model for the Python stuff, unlike those other lazy modders. Just attached a bit of code to a couple of events.
The XML stuff is pretty straightforward.

Disclaimer:
I can't be held responsible if the Banana Mod steals your identity and ruins your life, or if it explodes your computer in an orgy of plasmarific destruction. Remember, Bananas are dangerous and addictive. Use in moderation only.

Known Problems:
This mod exists.
When you connect up Bananas, you only see the happy bonus the next turn.
Only the Grocer bonus is listed in the Leader info screen. This is because the other bonuses are implemented in Python while the game automatically generates the trait info from the XML files.

Responsibility:
Blake at apolyton.net : grater@gmail.com
