Here is some good information which I was planning on looking up anyways. I remembered reading it a couple of years ago, but not the specifics.
When to Cut the Flower?
I think this is good information that should be added to a FAQ or maybe just pinned to the top. Maybe there could be a FAQ post pinned to the top and then we could add links to old threads like this and index them with a title such as "1. Should I cut the flower on my banana?"
I plan on cutting the flower on my Dwarf Brazilian soon, though I am tempted to see if it would touch the ground.