What are some Interesting aquatic plants I can put in my fish tank?

I have a small 5 gallon fish tank and I would like to put a small aquatic plant in there. Are there any that can survive in a small tank? If so, I would prefer if the plant didn't grow out of control. Oh, and i would like to add a fish eventually, Will the plant(If any that fit the description) effect the fish?
I'm looking for something small and quaint.