I'm working on a plugin that will do just that.
I'm afraid i can't say when it will be ready for public consumption - as it will depend on how much time i can find to work on it - but a preliminary version shouldn't be very long. It's fairly simple, but i'm currently getting my head around some of the design considerations.
It will be a front end for NextGen Gallery. It will create a page per gallery and a subpage for each image in the gallery. The album, gallery, and image pages will be template based, so you'll be able to add things to them if you want.