You should come to Paraty Brazil - here they have so many different types of banana it's wonderful! Prata/maça/arnica/agua/ouro/terra/roxa....to name but some of the more obvious varieties. It really does open up a whole new ballgame compared to having just "banana"! They each have their own different qualities and flavours.
Also, there's a movement called "non-conventional food plants" (PANCs) here in Brazil, and within it many people are experimenting with eating green banana in different ways (my favourite is chocolate truffle), and also the skins of bananas (made into burgers for example)! They even eat the banana heart, a sort of purple flower that hangs off the bunch of bananas, and you can even eat parts of the stem like a bamboo.

Maybe I should do a post about all this?