Make sure your substrate has enough dept to support the plants. Minimum 4 - 5 inch I would suggest. Less will restrict the growth of the plant and it will not have enough mass to support the plants when they move in the water-flow.
I had a guy tell me lotus was good for this. I too am wanting a plant to grow out of the aquarium. The aquarium is in a little sunroom and I think it would enhance the look I am going for. Someone else said Papyrus. I was thinking ... the stuff the egyptians wrote hieroglyphs on? hmm. Can't say I've seen it though. Will check back later.