Looks like a Ensette Murelli(SP?)
Like dalmation soap said.
I jsut dragged mine inside now.
Hardy to zone 10 so don't wait for a frost or it could be too late.
Here is a link to the banana wiki with some more info on it.
Ensete ventricosum 'Maurelii' - Bananas Wiki
I am told pupping like other bananas do is very un commmon, but can happen.
Once they flower or I guess at any stage?? when chopped back to the ground they do throw new shoots which you can see in the link.