Here in zone 6 I used to have to dig mine up in the fall, and store the stump in the basement. They are really cool, and now I wouldn't mind getting another one, although when I had them, they were a pain in the rear to take up in the fall. They look really good in a setting with other tropical looking plants, like cannas and hibiscus.
Oh, and the banana plant will produce little plants occasionally from the base that can be separated.