#7 Real Ice
Download it here.
Besides the water, another thing that doesn't look too right with Skyrim is the ice. Unlike real ice, it's barely reflective. The Real Ice mod by Yuril fixes that.
For some reason (Skyrim was built for consoles, after all) the default textures for the ice are about as undetailed as they come. Real Ice adds parallax texturing, so it reflects the environmental light a lot better than the vanilla version.
