I have a banana plant in my back yard. It's monstrous - maybe 15 or 20 feet tall. I've been brutal to it... I cut it to the ground in January of 2007, and it came back with a vengeance. I cut it back again this past January, and again it grew back to its full height. The recent hurricane shredded most of its leaves, but they're still green so I've left it alone.
Today, much to my surprise and delight, I discovered a big pod on it, filled with blooms and baby bananas. How cool! I've no idea if they'll be edible, but its very neat to see.